Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ecabbecee0b410…

MALICIOUS

PDF

82.6 KB Created: 2021-02-25 00:59:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 49f74f39a2b5b4da0206807581229f41 SHA-1: afe933460c74d1f43245d5b7bea359399d27f9b8 SHA-256: b6ecabbecee0b410f1cc7343841c3878c38dd53597764a72aadcde729cf2194a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it's a link farm on disposable hosting. The embedded URL points to 'baarspo.ru', suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a common phishing lure.

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://baarspo.ru/123?utm_term=after+we+collided+release+date+usa PDF link annotation
    • http://vizit.store/limidazgzmz.pdfIn PDF document text
    • https://cdn.sqhk.co/lusajiki/aamlvgc/.pdfIn PDF document text
    • http://my-credit.info/zozalunenobtpsr.pdfIn PDF document text
    • http://gipilunafa.iblogger.org/rawivutesero.pdfIn PDF document text
    • http://zupinuxuxodu.iblogger.org/8913152161.pdfIn PDF document text
    • http://srakan.space/contemporary_abstract_algebra_9th_edtzp1o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449012/normal_5fd1bb2453c18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466679/normal_6026fe3d79605.pdfIn PDF document text
    • http://nevozepamuj.iblogger.org/oscar_award_list_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/bojowagawire/cxkDgeM/nail_polish_designs_simple_and_easy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426815/normal_60318ebe2c291.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/wurivuve/moxabebem.pdfIn PDF document text
    • http://takerowul.epizy.com/revatopux.pdfIn PDF document text
    • http://gafelen.epizy.com/captain_underpants_full_movie_no.pdfIn PDF document text
    • http://begosene.epizy.com/incident_report_form_daycare.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/is_powerade_zero_good_for_weight_loss.pdfIn PDF document text
    • http://pazatirademe.rf.gd/59786206991.pdfIn PDF document text
    • http://zikofizoredu.rf.gd/60719136824.pdfIn PDF document text
    • http://diwevobu.rf.gd/gejofutupevofetet.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_off000102c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C4 5096 bytes
SHA-256: c29636cc601e0a9aaac829296eb0b0dbad9cba3f0f7ff731b62646dcfadc3ce5
font_01_sfnt_off0001143c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1143C 12756 bytes
SHA-256: fecdbe1f787b2205532f02fff5920d4ca83aa458b257086b0ae477ff5ad81787

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