Malicious PDF — malware analysis report

Static analysis result for SHA-256 e056a40934da6f27…

MALICIOUS

PDF

93.1 KB Created: 2021-08-07 16:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: b1e3f601e33eb73921d568927eac9ee3 SHA-1: 2edb62c73ac13ea59f4f2a5c49c7f5802baaa54d SHA-256: e056a40934da6f2714169d1e064de873d18aef8fc4908a5dd419205045f4ac04
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed for malicious redirection. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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 http://toyteepee.com/uploadfiles/file/2105110518056042874kcjxm.pdf In PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4e81acc229---matokenojumafomonem.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a03c5aca62f---95481445924.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc23f80a433---79494071095.pdfIn PDF document text
    • http://abwingscolley.com/uploads/files/rujamiketi.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/teelml3e2fqn7gmo3icnq0vp3d/mudetodiwuwepod.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/764409b3974709c612a49c55b8a50d19/53753615849.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-6/file/tuvesakuti.pdfIn PDF document text
    • http://manhchenang.vn/webroot/img/files/sibudak.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c85498de562---sikijuzanupibitogatin.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d8e52ba38a---rurogenu.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b607265e012---fefutobuwetimovo.pdfIn PDF document text
    • http://labcoop-jsc.com/wp-content/plugins/super-forms/uploads/php/files/b4qbrhk8len72q2nmtvfof560t/nedavamemupijarokisor.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/tsr9elv0csj7smlgrdh8jdp8vn/11556115345.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/cdfdea1c1eb10245b9fa441011ec063a/49833740765.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/22e2c3b456af76e20b909477c7f0b484/pexugazipol.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf08badfa1b---534347673.pdfIn PDF document text
    • https://diphong.com/uploads/ribemose.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be8c0ddcc1a---guxipenajuralegomezokalav.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/3b82242bd8582a223218d1d1024e890c/4516996194.pdfIn PDF document text
    • https://swagath.co/new/ckfinder/userfiles/files/86113273210.pdfIn PDF document text
    • http://studioscoponi.eu/userfiles/files/fijuvafudezatetatek.pdfIn PDF document text
    • http://world-housing.jp/ckfinder/userfiles/files/mutakafiwi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=sat+word+problems+with+answers+for+grade+4PDF link annotation
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001048a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048A 17748 bytes
SHA-256: 11028630fc783baeac48faf9cb7cdefbf787f835188361aa2abd977848a7d1cf
font_01_sfnt_off0001331f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1331F 11324 bytes
SHA-256: 3ba1f1c5fd023631170126b6062af35d1f2f215b6d96237367ec9359545c97f3
font_02_sfnt_off00014d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D34 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.