Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cfb7cbfb86e50a4…

MALICIOUS

PDF

72.3 KB Created: 2021-02-23 23:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6ce5c500bc4efdbdca8360e812bc9957 SHA-1: 7a4b79c69d5a8cd7acac453647fd03829599d570 SHA-256: 1cfb7cbfb86e50a4425928d65290b505d1f9284dc58707782a5293c0e7c341bd
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=why+was+the+lorax+banned+in+california PDF link annotation
    • https://fujokemile.weebly.com/uploads/1/3/4/6/134694414/zujubaxuja.pdfIn PDF document text
    • https://mekowoto.weebly.com/uploads/1/3/0/7/130738632/b92a04e471.pdfIn PDF document text
    • https://tupirusu.weebly.com/uploads/1/3/4/7/134702138/4687011.pdfIn PDF document text
    • https://gixujadimi.weebly.com/uploads/1/3/4/7/134708567/07ee796.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404112/normal_6025b8faf20a9.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/gizonukorad/chess_titans_windows_10_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/83128225821.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/rinomamufapubux.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/72588272353.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/29831948840.pdfIn PDF document text
    • https://s3.amazonaws.com/kimone/login_template_android_studio_free.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_off0000d64c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64C 5524 bytes
SHA-256: e4ab08d6687d255e25fbeafb30465bc558252194c8f213b3938fcbaae2b3c641
font_01_sfnt_off0000e929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE929 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000f1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B6 10112 bytes
SHA-256: 7df258615400ee4388c8060c538cc65fec471e21537a818b1b03708948daa95a

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