Malicious PDF — malware analysis report

Static analysis result for SHA-256 46600572b73bfe90…

MALICIOUS

PDF

89.4 KB Created: 2021-09-03 15:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 158edbd09a5a30fbf462267a4eb1e328 SHA-1: f56384e15ede8236dc1ba105c5bfa035ff83ee12 SHA-256: 46600572b73bfe90c0c98b5710f97075a1871b0e10ffad11f430d13127152369
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous URLs pointing to potentially compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the PDF structure strongly suggest an attempt to exploit users through deceptive links, likely as part of a phishing campaign or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9761

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://smidgel.ru/uplcv?utm_term=relationship+between+economic+growth+and+development+pdf PDF link annotation
    • http://anupbolivia.com/images/files/52184633125.pdfIn PDF document text
    • http://abpaluso.com/upload/file/rosufarugeravemakixapex.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/bf5a8d58167b5bb3d02612842f26c5a5/60191318048.pdfIn PDF document text
    • http://sieuthibds.net/images/files/72302803294.pdfIn PDF document text
    • http://shyjjc.com/v15/Upload/file/202192135547248.pdfIn PDF document text
    • http://notarbrazda.cz/userfiles/file/7168269122.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a444c817e0a---16278840850.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/18cff117eea0e1fb33f05f8abcf1cde7/gosaweridir.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd2b5555f97---44578763821.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160852732a4f43---32067651943.pdfIn PDF document text
    • http://cablexconsulting.com/Upload/file/dumafupewewegadajawi.pdfIn PDF document text
    • http://promocode.lu/userfiles/files/luxofolowavoxijida.pdfIn PDF document text
    • http://savytrading.com/userfiles/file/xonugonurif.pdfIn PDF document text
    • http://wonsakai.com/uploads/files/57241580857.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c233cbbd3b6---7848809517.pdfIn PDF document text
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/1b58f1daa3e3d0473ef09446b6b882de/49384424068.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/061726139931.pdfIn PDF document text
    • http://snieznik.pl/userfiles/file/zedusugejekaxugukivokidit.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/955f8lhli4e2frhflpa8hll7d0/vawodezutijiko.pdfIn PDF document text
    • http://inwama4.vn/webroot/img/files/kalubusidemab.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/d055307c222d4462f41fcf43d4828c27/43707211402.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b7d5756a776---fusubaxasoso.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b62b5439a52---3658119949.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/8buto0vgd1n354fdqifkcq1u56/79889065009.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/ea855feddfac09da8a2a3edc75268038/zupolid.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/d53g96u0atuur3uoaahbl6gutn/64198681183.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEE 11404 bytes
SHA-256: ab3864010d55a0d60803cb13855d166c7a0d61fa94942cf6b37f9710295538a4
font_01_sfnt_off0000fa44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA44 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11256 17692 bytes
SHA-256: f8e4bf152ed060b27d0195bc4c261006fc0c1b08c0dc6f450560013c461acfc3
font_03_sfnt_off00014000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14000 16448 bytes
SHA-256: 0e4cde3d5bdd5452960de995a4807c8da4ec665155a9812e2f8e54e6c49b7878

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