Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa019b26d8755be…

MALICIOUS

PDF

78.2 KB Created: 2021-02-11 16:20:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: fb88cd92247cda9b23bff3799273f349 SHA-1: 10319c3bd5957a30d2c11eadaa5f2f4d86a93ec0 SHA-256: 0fa019b26d8755be9766cd3d856e14ae7452e8ee7d9ca1e0d1cf07dc8d935116
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF document employs a credential phishing lure, impersonating Microsoft and referencing a QuickBooks report to entice users to click a malicious link. The document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 8

  • 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://wawodupalise.weebly.com/uploads/1/3/4/6/134621762/geduzaxixegime.pdf.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://maypoin.ru/aws?utm_term=cleared+check+report+in+quickbooks PDF link annotation
    • https://wawodupalise.weebly.com/uploads/1/3/4/6/134621762/geduzaxixegime.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475720/normal_5fc96d0cc0f08.pdfIn PDF document text
    • https://vesabigixovo.weebly.com/uploads/1/3/1/8/131857304/pogoxo-rivikupezowatu-kegube-suniwuta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401989/normal_5ffb0aca85523.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/khle_Schild-Blase_rolltaspo2.pdfIn PDF document text
    • https://biligimanud.weebly.com/uploads/1/3/1/4/131454089/2313414.pdfIn PDF document text
    • https://jukosixosibi.weebly.com/uploads/1/3/1/8/131871462/33570336769194d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450250/normal_5fe86a40b1ad4.pdfIn PDF document text
    • https://konilusikiwi.weebly.com/uploads/1/3/3/9/133986353/9306177.pdfIn PDF document text
    • https://nokajadum.weebly.com/uploads/1/3/4/8/134887388/nufozudeka-nujemuvalebulel-josokodez-dojefazulin.pdfIn PDF document text
    • https://lixojubenolida.weebly.com/uploads/1/3/4/3/134375882/novawadubox_lavikamomu_nemaguziluxuge_vesedivosamuke.pdfIn PDF document text
    • https://kejobogufepemis.weebly.com/uploads/1/3/0/7/130775396/kowejes_jakafed_zuvetekejut.pdfIn PDF document text
    • https://komamezumef.weebly.com/uploads/1/3/1/3/131398541/ab57a0.pdfIn PDF document text
    • https://visameme.weebly.com/uploads/1/3/1/6/131636817/nodutikavevor.pdfIn PDF document text
    • http://weraka.online/30306686156uuf2j.pdfIn PDF document text
    • http://50off.pro/68035454256indt3.pdfIn PDF document text
    • http://eurozone.pro/rtog_contouring_guidelines_head_and_neckjht2g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379844/normal_60219b553da39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414873/normal_6014f37a7c1e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505839/normal_5fe5e6ada9cff.pdfIn PDF document text
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/mijasikinogatatu.pdfIn PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/9c3c9529861d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A0 5396 bytes
SHA-256: e5a348260ef60f9803021278916394bdc8a047776d64ae49e2d8fb0dc617cfd3
font_01_sfnt_off0000f8dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DD 10720 bytes
SHA-256: 568c01cf2c61eb23deb9eeb08d49d7551565a0536c022910cdc230837f8abb12
font_02_sfnt_off00011d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D5E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e