Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e44164e91975119…

MALICIOUS

PDF

86.7 KB Created: 2021-06-25 18:45:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: d948506ae7daedb6631ff1b59932f1d5 SHA-1: 353a93894a073a8771f9fd51d48a2b48983b0c00 SHA-256: 2e44164e9197511964fc45dea1b425c3ea144843f1f0305b8b23c44ae7279cee
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The PDF structure itself is also indicative of a link farm designed to obscure the true destination of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://wastran.ru/uplcv?utm_term=the+cut+ask+polly PDF link annotation
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/41jdne4vbci9aqmede6qqit523/40508628707.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/7819418385.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a8c41cc79c---75452531027.pdfIn PDF document text
    • http://amazingindiaphotos.com/amazingindiaphotos//upload/fckimage/file/mawezirokevovilasowe.pdfIn PDF document text
    • http://www.armstrongre.com/files/files/lanokuvaxufobenagerava.pdfIn PDF document text
    • https://hchoanglong.vn/userfiles/file/19764046152.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a341fb03a7---zukevikifojadojiv.pdfIn PDF document text
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/0l6ri5scqekd57u22r6mk1t9a8/javajuzupazagor.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/e8b103854613283fbd9f32b9ac0f456b/temavisugogofudab.pdfIn PDF document text
    • https://onlinendttraining.net/files/sufixenipejitubebebuduf.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0fca7bbdbc---69504011662.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/70684027240.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/22671815807.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/bb48df87a4c662ca9e1bcb6c077088c5/fesukofiruvenuzozuv.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/4b27bad13504e05032e497bb3cdcffc0/65091496104.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a129369c5---19628454968.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd9c8b7879d---jodemomonilolomonib.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16089abaa6906b---vunubot.pdfIn PDF document text
    • https://foundryindia.org/userfiles/file/59193386936.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c506bc7593---80775906602.pdfIn PDF document text
    • https://pensiunea-escape.ro/ckfinder/userfiles/files/61921392505.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8a56d682a---79176939145.pdfIn PDF document text
    • https://stcc-sa.com/motakamel/Ups/files/63905324598.pdfIn PDF document text
    • https://anukulagrotech.com/userfiles/file/84320294676.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB6 17596 bytes
SHA-256: 480ddc96f6e62410755863d8a0754cc94d9f802573740b757285ef906223f23b
font_01_sfnt_off00011da6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA6 10444 bytes
SHA-256: bea771552f46ab84d2588d88bbbfa662be9b45be5611f216d72f49617936c42e
font_02_sfnt_off0001359f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1359F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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