Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7fabc8931a4defb…

MALICIOUS

PDF

87.0 KB Created: 2021-03-19 23:31:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ad71ac7266a79bd01dc3700f2bb923b7 SHA-1: 57c5e20254a390e6b54fd8f336aa6b1566b2252a SHA-256: f7fabc8931a4defb085104fed7184a99f336d0106f2a2d9f6abe77fe2455bd3a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lozipotod.ru/wix?keyword=unblocked+game+websites+for+ipad PDF link annotation
    • http://bamefidev.mygamesonline.org/rusekovepu.pdfIn PDF document text
    • https://cdn.sqhk.co/sutazojawote/ggghm4m/parent_portal_powerschool_login_wsfcs.pdfIn PDF document text
    • https://cdn.sqhk.co/subesanodag/9Xgjijr/43308415204.pdfIn PDF document text
    • https://vadalafazewa.weebly.com/uploads/1/3/4/8/134897988/6050671.pdfIn PDF document text
    • https://pulijapejupexeb.weebly.com/uploads/1/3/4/0/134041872/domororofetonim.pdfIn PDF document text
    • https://cdn.sqhk.co/kulizuxekume/0ajcVVq/62056278694.pdfIn PDF document text
    • https://vobawele.weebly.com/uploads/1/3/5/3/135334277/2512040.pdfIn PDF document text
    • http://rasazajafatirek.mypressonline.com/89803734284.pdfIn PDF document text
    • https://fakazurirogedim.weebly.com/uploads/1/3/4/7/134743668/c89894c.pdfIn PDF document text
    • http://gafuvufafokujop.sportsontheweb.net/how_to_share_someone_elses_post_on_linkedin.pdfIn PDF document text
    • https://nexuroge.weebly.com/uploads/1/3/4/4/134465667/56502a43ff88f66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6f81cef9-66a2-447d-9e1d-4c0427ef15c5.filesusr.com/ugd/4d935e_f5ebd28c8b384580ab102761c34ad302.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/62489203271.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/88901347305.pdfIn PDF document text
    • https://0879403c-3be5-48e4-925f-21334a7d5cfe.filesusr.com/ugd/407fcc_a325cbbedc6e442aa7e5a1817252963b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/30243044416.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/etiqa_takaful_berhad_annual_report.pdfIn PDF document text
    • https://ad843f61-c544-48d7-8cfb-3c048b9edb46.filesusr.com/ugd/0dd9ed_f25eb27964b74aa2a6e3e3c25a90e0c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/61475080458.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/engineering_internship_resume_template.pdfIn PDF document text
    • https://73e25548-3913-4bbb-aa69-a1b25f69568d.filesusr.com/ugd/cece23_15356fa57f9643398542e0967fb461eb.pdf?index=trueIn PDF document text
    • http://palelezugob.onlinewebshop.net/what_was_the_economic_social_and_political_impact_of_the_american_revolution.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/34942481864.pdfIn PDF document text
    • https://71da2aa5-51c3-4f2c-ab18-08bbbad20131.filesusr.com/ugd/d216cb_7103729772bb41f0a2de1e5183ff9949.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001151e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1151E 5760 bytes
SHA-256: bec158d990b03b289e2c774b86a7ca27aa1a1ee90c11817e43741ea1abc3f4e8
font_01_sfnt_off000128bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128BB 11092 bytes
SHA-256: 6f21d4c625544f650276f74ac1a263b341906bace49d61626530454d0eb20953

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