Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2493e1a88c9af5…

MALICIOUS

PDF

67.4 KB Created: 2021-02-18 10:24:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 564965c8a12a0778aed5064a1e2ee427 SHA-1: cf3496122e6e69e47de6c2ac899bd77dd67e682d SHA-256: bd2493e1a88c9af5da6cc45d81f475be7a0a9e4e6121556839f8f50a5be249c4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous external links, many of which are hosted on disposable domains and utilize UTM parameters, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the presence of external URIs and the overall structure point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/123?utm_term=social+media+marketing+mastery+2019+3+books+in+1 PDF link annotation
    • https://begiruxuvasepi.weebly.com/uploads/1/3/5/3/135351124/0d7ff5a2ed3d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459170/normal_5ff605c9da763.pdfIn PDF document text
    • http://kefipipina.22web.org/cnn_world_sport_reporters.pdfIn PDF document text
    • https://gawinesiti.weebly.com/uploads/1/3/5/3/135383431/86913127c5c0e.pdfIn PDF document text
    • http://tinesoxexi.22web.org/subepowularadegazukunogo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454300/normal_600f10ce22d8c.pdfIn PDF document text
    • http://zukilobuzoroko.66ghz.com/happn_app_mod_apk.pdfIn PDF document text
    • https://nowiwadigomu.weebly.com/uploads/1/3/4/0/134018048/napuwokixovuxok.pdfIn PDF document text
    • http://bezufosaga.iblogger.org/95149139292.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416514/normal_5ffd13e312755.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376374/normal_6028890ef05a2.pdfIn PDF document text
    • https://pexasuwen.weebly.com/uploads/1/3/4/5/134593650/7646062.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bopexetosezulav.rf.gd/87687665508.pdfIn PDF document text
    • http://jepafuzezax.epizy.com/atlas_copco_screw_compressor_manual.pdfIn PDF document text
    • http://sarebabeb.epizy.com/41527505530.pdfIn PDF document text
    • http://labazesunug.epizy.com/divisejupalesedexurim.pdfIn PDF document text
    • http://divifafapinuk.rf.gd/79665821354.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_off0000c88e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC88E 6316 bytes
SHA-256: 4df800acba7ff91e97d5e0a4c964b09bf21d219b9ef181cec1645e6ef31d39a6
font_01_sfnt_off0000ddf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF0 10080 bytes
SHA-256: 4111a675afc548a055a2736e32cb985d4a7fd270d3f7cac317d611bfcf517a15

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