Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaafdf392f082594…

MALICIOUS

PDF

76.5 KB Created: 2021-02-21 09:30:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9102b7b2b83f361a756f410f3186b549 SHA-1: 5deef514e21064edfc9783c42e6d80478aa57a34 SHA-256: eaafdf392f082594b0278a5492c1d1785f97fce56950b606e84219a1cc3425d5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://druttle.ru/wix?keyword=junior+hockey+stick+size+guide+uk PDF link annotation
    • https://cdn.sqhk.co/nojedevatas/cTDiesv/movies_like_detective_byomkesh_bakshy.pdfIn PDF document text
    • http://alcexpress3.xyz/99320838035jfvj3.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/LhgigZX/wozojalesimatapegibaga.pdfIn PDF document text
    • http://topmassage.net/219583667337epvq.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/hjhDrji/college_football_championship_2019_predictions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415070/normal_60177051a82bf.pdfIn PDF document text
    • https://cdn.sqhk.co/xotosira/ePzic0H/xavosepoduk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gojejamajutemus.epizy.com/beyond_compare_3_full_version_free.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/zazewero.pdfIn PDF document text
    • http://vibulowivez.epizy.com/5332853468.pdfIn PDF document text
    • http://setobefo.epizy.com/bell_chime_sound_free.pdfIn PDF document text
    • http://nivewurunowu.rf.gd/railroad_tycoon_1_manual.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_off0000efd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD9 5164 bytes
SHA-256: 4fe1829d8a35f1900df47e099b6c8767b0f5cff15d8b3c06db5c8734bbabaa14
font_01_sfnt_off00010173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10173 10472 bytes
SHA-256: 488c8e8029b7fad1f7a71285bfc57c75880057230c25b80601a7d524f6dfbc9e

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