Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7d108533b4190a2…

MALICIOUS

PDF

75.9 KB Created: 2021-02-13 22:26:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c893971f793872544fc9e0a81b01e087 SHA-1: b6a344f9576935eaa8295375d957fd8725f4c613 SHA-256: b7d108533b4190a2e8a418da896c69ac8709dc55c81ebee496be861baf57f0cf
186 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged for brand-impersonation credential phishing. It contains multiple URLs, including one pointing to a Weebly subdomain that impersonates Netflix, likely serving as a phishing lure. The PDF also functions as a link farm, directing users to various domains, some of which are associated with disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gefobivuvevu.weebly.com/uploads/1/3/1/3/131380717/fa667478.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.
  • 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://leonvi.ru/wix?keyword=night+chapter+4+quiz+answers PDF link annotation
    • http://c-advance.space/emphatic_form_of_the_verb6np94.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/haiaha2/64780231806.pdfIn PDF document text
    • http://coolmag.biz/6705976277676x1n.pdfIn PDF document text
    • https://cdn.sqhk.co/pirasemofoge/fgj1Cjd/sajafa.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/LrUhbie/zalavavejisudedosodef.pdfIn PDF document text
    • https://cdn.sqhk.co/roratumopiv/iaoEFhh/nekokisafujiju.pdfIn PDF document text
    • https://cdn.sqhk.co/giruzegovu/jeygdUA/imobile_icici_bank_application.pdfIn PDF document text
    • https://gefobivuvevu.weebly.com/uploads/1/3/1/3/131380717/fa667478.pdfIn PDF document text
    • https://marikikugawu.weebly.com/uploads/1/3/5/3/135326377/1580913.pdfIn PDF document text
    • https://popofexepazor.weebly.com/uploads/1/3/2/6/132680818/3463585.pdfIn PDF document text
    • http://mixed-rootwork.com/thuc_metformin_10006tl8f.pdfIn PDF document text
    • https://cdn.sqhk.co/xanikadir/ijbjjcI/interesting_facts_about_dogs_teeth.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/HhjCjbU/58440081862.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/voropa/alternator_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/bed_bath_and_beyond_twin_sheets_set.pdfIn PDF document text
    • http://nosifunugiwes.epizy.com/mosepufagokipijavalotumit.pdfIn PDF document text
    • http://zatojuwetowoj.rf.gd/angle_relationships_in_triangles_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/aisse_exam_full_form.pdfIn PDF document text
    • http://xiwaresijo.epizy.com/zipopezu.pdfIn PDF document text
    • http://pagosunizuboroz.epizy.com/netflix_not_working_ios.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_off0000ed06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED06 5488 bytes
SHA-256: 888b711dbc72945568390300aa77aa18f7cc83ada372ab0007b1bc0af83143ef
font_01_sfnt_off0000ffd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD8 10148 bytes
SHA-256: c88627a56886f83c3c07c02be2b804dbc264f4a26e7d5cc14d3d840f9ce6d0da

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