Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb477b613696d9a…

MALICIOUS

PDF

39.6 KB Created: 2020-10-25 20:22:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: cc6061ec344d3c7e4af2399910488542 SHA-1: 77096f8b1bd74faedd67a3f1fe8364859cd4bafd SHA-256: 7fb477b613696d9aff4222e31fd5eee0d239348a3b35e77c687bd329bcab41a2
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/pify?keyword=samsung+plasma+tv+51+inch+user+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378167/normal_5f904fe8ed575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f8d202dead36.pdfIn PDF document text
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/koturatun-ketokepimi-fuwumapelofiji.pdfIn PDF document text
    • https://musiwimo.weebly.com/uploads/1/3/4/3/134359140/7502427.pdfIn PDF document text
    • https://xosotemup.weebly.com/uploads/1/3/4/3/134367608/dajupudu-zokarusoxol.pdfIn PDF document text
    • https://xakexoxos.weebly.com/uploads/1/3/4/3/134307698/meluru.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005909.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005909.bin)
    • https://s3.amazonaws.com/titugome/83572016019.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/pdf417_barcode_generator_api.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/tusivegejalatoju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3566ab57-b846-497b-a672-10d0bd41d4cd/nobegoseragu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a693b546-cd0a-4bdc-8919-d8258d11dde3/dalexirew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7952/3240/files/xukejowutevekiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5307/0509/files/pidaxuwogojesunadudef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5269/9300/files/bopamifem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0474/9718/files/hot_potato_cafe_philadelphia_2020.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 extracted file (font_00_sfnt_off00005909.bin)

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_off00005909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5909 5688 bytes
SHA-256: 0970a16638d5fa7c04272f864c949a5cc98c0ef93db8e8efa4457ffb9c14dbc9
font_01_sfnt_off00006c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C41 11060 bytes
SHA-256: 1b6cf5fa6828753423830486dedf057208c0c6586c820f524084aec230295074

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