Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac08d6895c503b6…

MALICIOUS

PDF

72.4 KB Created: 2021-01-19 04:22:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2d34906de28c5c07a2218ba06ad29379 SHA-1: 4f027fa0944367c164dc409d744e26ff62eb33ee SHA-256: bac08d6895c503b669198dc6f0bd3616cd5187a6cb598783f472918028e55b69
126 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to a link farm hosted on disposable domains, a common tactic for SEO manipulation or distributing further malware. The PDF's structure and the presence of many external URIs suggest it's part of a larger campaign to redirect users to potentially harmful content.

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://traffking.ru/aws?utm_term=make+business+card+template+online PDF link annotation
    • https://site-1250323.mozfiles.com/files/1250323/kesolupit.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/c5aDijp/ghostrunner_gameplay_youtube.pdfIn PDF document text
    • https://site-1248415.mozfiles.com/files/1248415/free_tv_apps_for_android_box.pdfIn PDF document text
    • https://site-1241800.mozfiles.com/files/1241800/lara_s_theme_violin_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/golizojuw/hfigghJ/befogalesufugorowobuto.pdfIn PDF document text
    • https://sefuxogam.weebly.com/uploads/1/3/4/4/134466031/4a9da64ef2f60.pdfIn PDF document text
    • https://site-1167964.mozfiles.com/files/1167964/wivasoliwig.pdfIn PDF document text
    • https://cdn.sqhk.co/rijunawep/ckQgg5V/destiny_child_game_all_characters.pdfIn PDF document text
    • https://kijapipova.weebly.com/uploads/1/3/1/4/131407887/sijanumukenir.pdfIn PDF document text
    • https://xekexudaxojow.weebly.com/uploads/1/3/4/3/134365032/3273660.pdfIn PDF document text
    • https://site-1194115.mozfiles.com/files/1194115/squidward_crash_test_dummy_gif.pdfIn PDF document text
    • https://site-1166608.mozfiles.com/files/1166608/57031829290.pdfIn PDF document text
    • https://xivilikowigonun.weebly.com/uploads/1/3/0/8/130813923/8125cb39ccf.pdfIn PDF document text
    • https://site-1176155.mozfiles.com/files/1176155/nizajekujovaso.pdfIn PDF document text
    • https://site-1175584.mozfiles.com/files/1175584/crossfit_football_programming_template.pdfIn PDF document text
    • https://cdn.sqhk.co/pevizopubok/tmGhejd/31729156837.pdfIn PDF document text
    • https://site-1177051.mozfiles.com/files/1177051/11968328835.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1A 5428 bytes
SHA-256: 90d1135255d428d6f3181d4f670804826b3baf340d72f7d477c1cc1623560ee8
font_01_sfnt_off0000f17d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17D 10244 bytes
SHA-256: 0e54cd6535bd6b049887f3341bba07219496906e64bb30ce9f7e0254df2c6397

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