Malicious PDF — malware analysis report

Static analysis result for SHA-256 3379a923a82638b7…

MALICIOUS

PDF

106.9 KB Created: 2021-01-21 14:13:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 918f8e5fdb93f94e1780937c53a7540d SHA-1: 30eccff87d8474b2b8f433498d7cee9f0300d6bc SHA-256: 3379a923a82638b75a30a27eb84f3367ae327c17f92131f275f5e89324076df6
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'bologen.ru' suggests a potential phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and the ML/ClamAV detections point towards a malicious document, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=baedeker+guide+books PDF link annotation
    • https://cdn.sqhk.co/taduzotul/SDnJmJu/pukaridilifepu.pdfIn PDF document text
    • https://cdn.sqhk.co/wezikinupig/gfijja6/74325065312.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/cjfgxb7/donkey_kong_arcade_machine_price.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/vkjcjgF/lusaselijolebaziworanive.pdfIn PDF document text
    • https://cdn.sqhk.co/wejuladuke/eihbibB/airport_companion_programme.pdfIn PDF document text
    • https://cdn.sqhk.co/posebozej/Cheghjh/ice_princess_spa_salon_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366055/normal_5fed48480cc63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370090/normal_5f9fa9a8b5d3d.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/ijehagd/87607231129.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393759/normal_5fdeec64e9665.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471988/normal_5fd2687c37c96.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/dhedk6l/pozatiraxefasujuf.pdfIn PDF document text
    • https://cdn.sqhk.co/nepelusir/hjbTehi/stickman_soccer_2016_mod_apk_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424036/normal_5fdf168a5164f.pdfIn PDF document text
    • https://cdn.sqhk.co/xewasejeve/GghI75I/59074207073.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/jupoti/abc_cursive_writing_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/49229256441.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/antivirus_360_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/blackmagic_pocket_cinema_4k_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kimone/dispute_something_on_my_equifax_credit_report.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 3

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_off0001684f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1684F 5212 bytes
SHA-256: 51f74c80d0bc1993ae6f26f19d4cb4f95083475ffd7a5908759486226553a8e4
font_01_sfnt_off00017a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A1C 10804 bytes
SHA-256: ae3057206bb0fbab567166c948bbdaf2c9d316a9d0e401d48742cc904899cdb9

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