Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eee3d31326c65a1…

MALICIOUS

PDF

79.5 KB Created: 2021-02-12 04:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: c24bc53b1e9a1c23f91edf86faa47522 SHA-1: bdab57cc2c875a1d178e66dd48ba2e662aed58cf SHA-256: 7eee3d31326c65a1a5507edf721608b21e3295657524f87052b3c4f9c4f707f3
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable domains and potentially malicious content, as indicated by the PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics. The ML classifier and ClamAV also flagged this file as malicious. The embedded URLs suggest a phishing or content-luring scheme, likely intended to redirect users to malicious sites for further exploitation or information theft.

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.
  • 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://bologen.ru/wix?keyword=a+brief+history+of+time+mobi PDF link annotation
    • http://akvatehnika74.ru/17836583649d7pod.pdfIn PDF document text
    • http://doordash.fun/tabela_anexos_simples_nacional_2019woy08.pdfIn PDF document text
    • http://fbdirect.site/intermediate_financial_accounting38jj3.pdfIn PDF document text
    • http://medicalpracticementor.com/73616077399wgu7i.pdfIn PDF document text
    • https://dezitatukuti.weebly.com/uploads/1/3/5/3/135389988/3417849.pdfIn PDF document text
    • http://appletopshop.ru/social_phobia_inventory9m867.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/jdngfto/rocket_racing_igniter_wheels.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/jgdfhi0/8734320519.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/titan_iom_early_bird_menu2tbjd.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/vgeijaX/5357853060.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/pilapikajatanakufaxixru9r.pdfIn PDF document text
    • http://misstourist.info/9396047998pk6oi.pdfIn PDF document text
    • https://cdn.sqhk.co/lipetebo/7WhbjhE/69828648309.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/jjghha6/68389917785.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://majuditatip.rf.gd/what_does_egotistical_mean_yahoo_answers.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_off0000fc6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6B 4996 bytes
SHA-256: 81d11fab2fa9fe806bd246d5e7ae12b0a21e519732bacb3a29141d127ac4b8d9
font_01_sfnt_off00010d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4A 10548 bytes
SHA-256: 52e2e1319879bb199625f0247647875d5ef0da634a1b8fe34f33a1dc213a11c2

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