Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30186bce764c59c…

MALICIOUS

PDF

78.6 KB Created: 2021-02-16 21:47:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 2bb157f7712d13813e436e5be7e51c57 SHA-1: bd7c32361a8bd7b3cf7a16a48b524cd4c5478545 SHA-256: c30186bce764c59c65d1aa31c8b9ea1dcdc4a158033c097631fee2bdd0564e20
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically pointing to 'bologen.ru' and a keyword suggesting a phishing or scam lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, many of which are likely malicious or part of a link farm designed to distribute malware. ClamAV and ML classifiers also flagged this PDF as malicious, supporting the phishing and potential malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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/wix?keyword=the+raccoon+who+lost+their+shape PDF link annotation
    • https://nalusopiko.weebly.com/uploads/1/3/3/9/133997408/fenebu_buzirodinadim.pdfIn PDF document text
    • https://lezekuzog.weebly.com/uploads/1/3/1/3/131378913/d830192.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366339/normal_5fcd0652b920f.pdfIn PDF document text
    • https://cdn.sqhk.co/giripiponi/xLJ0phc/45654339173.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368956/normal_600fbbf6aab38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485435/normal_601cd8743be13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505699/normal_60025feef3bb6.pdfIn PDF document text
    • https://pawusavexamase.weebly.com/uploads/1/3/0/8/130813618/gutamopafalonu.pdfIn PDF document text
    • https://kamutimasevukov.weebly.com/uploads/1/3/1/8/131856564/rikibopiram.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379362/normal_5fe263e88e6eb.pdfIn PDF document text
    • https://lagonola.weebly.com/uploads/1/3/4/8/134851586/c4d9c4d8d3417f.pdfIn PDF document text
    • https://cdn.sqhk.co/gowexenopa/hcgh4zq/song_words_in_picture_frames.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
    • https://s3.amazonaws.com/xuxifuzituwu/integers_worksheet_algebra_1.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/azure_information_protection_portal.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/breeserif-_regular_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/zapelefojowaf.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/wuledameburinikelutoruj.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/25305966949.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/apron_pattern_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/vivaldi_four_seasons_piano_sheet_music.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_off0000eb25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB25 4852 bytes
SHA-256: 3fed054e984b81a48a7e0592a86b096f73ae55699ea43c755ce9c05c2b6c477e
font_01_sfnt_off0000fb9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9C 10240 bytes
SHA-256: 7b609c447b56db3b98339ac4dad03f39756b581926b6946fb451354392f01e8a
font_02_sfnt_off00011e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E98 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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