Malicious PDF — malware analysis report

Static analysis result for SHA-256 e908b662127cfc83…

MALICIOUS

PDF

67.3 KB Created: 2020-11-22 12:13:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: e46ff01a7509c04f9fa797515a0bd067 SHA-1: ae609125b05382918a88bc8b79dd8c0a5be60ea8 SHA-256: e908b662127cfc83139f7948cecbe8a06e0d6235dbc0e706b813ac2eb005a21d
254 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/wb?keyword=my%20grownup%20christmas%20list%20piano%20sheet%20music In PDF document text
    • https://cdn-cms.f-static.net/uploads/4443809/normal_5fa6e031bef6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5fa5763ea6e53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387590/normal_5f91d25d63d07.pdfIn PDF document text
    • https://lifesodoxeduze.weebly.com/uploads/1/3/4/3/134372712/8a99c3a1f16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463010/normal_5fb3d3cc19fb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f8dde7d5018b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6915f5c7-4df2-4399-b880-86729efb5774/xexexosozulul.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/sloppy_mechanics_fairmont.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/52223368778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/182ac621-1b1a-4715-8a93-a15f3896eb69/60705142152.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/sell_my_puppies_on_craigslist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e19457-2b01-43d0-9345-4759fb498758/4942617625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78704048-ea08-4c62-b0e8-86f147f78174/flashback_a_brief_history_of_film_pd.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/zoleme.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/bodisebafut.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA11 5544 bytes
SHA-256: d9135470332702ef4ad056918d8e374fca5c78a7d067bf2bdb3e66d3a4c29fd5
font_01_sfnt_off0000dcef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEF 10360 bytes
SHA-256: 7e6af096e8fb1e5cd0a5e866c2b4953d5acb0351cb964805d8db92f2d6c1bb1f

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