Malicious PDF — malware analysis report

Static analysis result for SHA-256 044853564b74dbd6…

MALICIOUS

PDF

70.9 KB Created: 2020-11-18 03:14:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 12b49e741ebaf123896972967192f61e SHA-1: b5005a30fadffbc9ef2b35336836a029729d911e SHA-256: 044853564b74dbd662d2243d295e3a6405d5cedcd887e462987ae743d733c039
216 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, specifically for brand-impersonation credential phishing targeting Apple ID. It contains a mass of external PDF links, with one redirecting to a Weebly hosted PDF that likely contains the phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to steal user credentials.

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://vajibenutiw.weebly.com/uploads/1/3/4/4/134487234/7cfffbb6ea7.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://trafftec.ru/123?utm_term=six+guns+hacked+ipa PDF link annotation
    • https://vajibenutiw.weebly.com/uploads/1/3/4/4/134487234/7cfffbb6ea7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425511/normal_5f9d8bc4eb6fc.pdfIn PDF document text
    • https://davijoxo.weebly.com/uploads/1/3/4/3/134357566/gupaxivire_vejarefo_milug_zoreboruzuz.pdfIn PDF document text
    • https://situnege.weebly.com/uploads/1/3/4/5/134578036/a9fef989ce3b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457320/normal_5fa813846ae2e.pdfIn PDF document text
    • https://najatiwexit.weebly.com/uploads/1/3/4/0/134041182/814d9.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420025/normal_5f9b142aec967.pdfIn PDF document text
    • https://gedobelega.weebly.com/uploads/1/3/4/3/134375191/tezude-gubopi.pdfIn PDF document text
    • https://voladivilutefuj.weebly.com/uploads/1/3/4/5/134500748/289442.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/chhota_bheem_movie_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/fivumimakudekefawewizodu.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/xivebogafopud.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/st._alban_roe_church.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/spring_break_2020_texas_aisd.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/cisa_questions_and_answers_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/15839903162.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d78a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD78A 5440 bytes
SHA-256: 61d884d9323161b7855957ab009b3889b8336925378f40e7c55c8ecbc646eba2
font_01_sfnt_off0000ea17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA17 11112 bytes
SHA-256: bb8cdc08e93d9381d55f028b735a39ab02e141062fd1e41873b96d629c82c39e

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