Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ab8e787acd3d05…

MALICIOUS

PDF

76.9 KB Created: 2021-03-01 02:39:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6c894b9bd8ab6b7ba93c95a67643459d SHA-1: 36fc2b6223ac8abf38806f8554d14af150c01fbf SHA-256: b2ab8e787acd3d05b3f9134abd7473c63498058735ad4988828651cb8cb07adb
196 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious SEO-optimized content, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution campaign, likely initiated via spearphishing.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=rain+school+book+summary PDF link annotation
    • https://jigupipugefelo.weebly.com/uploads/1/3/4/3/134387822/b5254beca2899.pdfIn PDF document text
    • http://voirly.xyz/galibijerijadewilovwmuuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sonazorapabame.epizy.com/takulujes.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/moxover.pdfIn PDF document text
    • http://nigojelur.epizy.com/pitch_black_full_movie_300mb.pdfIn PDF document text
    • http://xevorerokune.epizy.com/tirusanezafo.pdfIn PDF document text
    • http://tamedigozetot.epizy.com/midland_x_talker_t20x4_manual.pdfIn PDF document text
    • http://zuzasuzojenox.epizy.com/mitobafatikoxutogagapexa.pdfIn PDF document text
    • http://setuvufijub.epizy.com/feral_druid_guide_bfa.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/83816174180.pdfIn PDF document text
    • http://wefexafunedex.epizy.com/pisimidugovoxatularelig.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/filumupeturomarozefokoso.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/geometry_vocabulary_worksheets_high_school.pdfIn PDF document text
    • http://zutawatupasexap.rf.gd/lejosolomen.pdfIn PDF document text
    • http://nobuxuka.epizy.com/cell_phone_booster_app_for_android.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C4 5036 bytes
SHA-256: a2768f128d177599f7b3a3e09048a02a8be4065adeb51d208ac648229b637d5b
font_01_sfnt_off0000f5a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A7 10168 bytes
SHA-256: cc8b7f53b5105ff35e3d91d91da531d5811383b7e1d0abffd99f36982d63645e
font_02_sfnt_off0001183b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1183B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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