Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3fb36f4b3f5530…

MALICIOUS

PDF

42.8 KB Created: 2020-08-24 06:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 63e4a36012e34cbcaaa4d5b04abba944 SHA-1: 21a0ac8c69d18be72c3c6c8d47c8923b234bc9b6 SHA-256: fc3fb36f4b3f553029fc5c41ba1e0a5e92ef8817bba098af505337bc1d280a3d
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://ttraff.cc/pify?keyword=a.+x.+l.+%2528+2018 In PDF document text
    • http://files.alaskabirthing.com/uploads/1/3/1/4/131437229/memag-dubuvulilitibud.pdfIn PDF document text
    • http://jaloziv.walcousa.com/uploads/1/3/2/7/132741099/7512426.pdfIn PDF document text
    • http://files.nicolas-rigaux-photographe.com/uploads/1/3/1/3/131383771/edad06231d.pdfIn PDF document text
    • http://files.modernsageevents.com/uploads/1/3/1/4/131452824/e50cf266295.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4394/6649/files/adverbial_clause_types.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1336/files/59950835335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9671/0050/files/furulaluweviwawis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1908/2651/files/lewiruka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0755/5222/files/travel_agency_website_templates_bootstrap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6099/2927/files/48968120858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/megaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8697/1029/files/32350669899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/7873/7061/files/lemunuvavuleref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1856/5270/files/lick_life_season_4_episode_27.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0653/3525/files/54934895253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9505/5766/files/3353532635.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 6

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_off000068fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FD 4884 bytes
SHA-256: 1d4a4649f1d0f80506d14f45d808d85bc4e1b6aba7c604776fdb1d05a65a150e
font_01_sfnt_off000079c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C1 10716 bytes
SHA-256: 3bdbdf217eea7683e5a4c6bd0fb2d578162c2723a82a3255249112bc45c4646d

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