Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d982026b9daac78…

MALICIOUS

PDF

65.2 KB Created: 2020-11-11 02:54:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 52002861b273e0e28b34bf4e2bc492c9 SHA-1: 0124adbddcee4295a1e33988d4da9c71c166ae72 SHA-256: 9d982026b9daac78a137f1193fa75ea72a426904350636cffc312eada994fe05
216 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, indicating a credential phishing attempt impersonating Apple. The file contains numerous external links, suggesting a link farm or redirection mechanism to deliver the phishing content. The ClamAV detection further confirms its malicious nature as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://pesawesezopi.weebly.com/uploads/1/3/4/3/134327800/datugujifobidem.pdf.
  • 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://traffset.ru/aws?keyword=the+things+they+carried+symbols PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f8a4dd253f30.pdfIn PDF document text
    • https://pesawesezopi.weebly.com/uploads/1/3/4/3/134327800/datugujifobidem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409244/normal_5f9e07080d321.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450428/normal_5fab35a50e944.pdfIn PDF document text
    • https://zebamejiwan.weebly.com/uploads/1/3/4/3/134312785/jemupepemitade.pdfIn PDF document text
    • https://rosofofupamufi.weebly.com/uploads/1/3/4/3/134364257/bogokafi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_5fa1dcf126e68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451221/normal_5fa26379d0979.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5f87bba405fac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369659/normal_5f8a2863bd2b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385436/normal_5f8fe10fc33e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471109/normal_5fa3a787d7c31.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aae7b600-7bc2-4a03-846f-d8574ef889c7/antioch_community_high_school_antioch_illinois.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/789ab863-b1c2-454b-99fa-24d5022a384c/gitogokaperinozisurom.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/lajavagisozudikitevuvofo.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://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_off0000c55a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC55A 5544 bytes
SHA-256: f66e3de1895395ce6d11bacf2e8adcd5ae53569e68a74a09075c878e559ff529
font_01_sfnt_off0000d80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD80F 9416 bytes
SHA-256: f0e034132657ab1909a2b74443dfaae035696743801aa3dc50ebbb913e30b20c

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