Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0b1831c42a024d…

MALICIOUS

PDF

45.2 KB Created: 2020-10-10 17:25:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c27468f070c7c502d68a14cea06fef77 SHA-1: efb36967e2a995fd62ae703ac55ed5d293698ffd SHA-256: bf0b1831c42a024dc572c0241912982176c9d119d5876cef774ef7ff00b187e6
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.club/pify?keyword=midsomer+murders+ring+out+your+dead In PDF document text
    • http://files.offbeatapothecary.com/uploads/1/3/0/8/130874031/nutusikevizu.pdfIn PDF document text
    • http://files.lincolncommunityleague.org/uploads/1/3/0/7/130739904/6532388.pdfIn PDF document text
    • http://files.abbyloupottery.com/uploads/1/3/0/7/130740517/rekeroxelomalak.pdfIn PDF document text
    • http://files.syrenialifestyle.com/uploads/1/3/1/0/131070030/bakezubanipuxi-nebomagid-dukukira.pdfIn PDF document text
    • http://xamux.maitrikundalini.yoga/uploads/1/3/1/4/131483229/cf6f5a2fe6.pdfIn PDF document text
    • http://rikum.trishspaparazzi.com/uploads/1/3/1/6/131636698/4096879.pdfIn PDF document text
    • http://files.lifewithhd.com/uploads/1/3/1/4/131454549/261797.pdfIn PDF document text
    • http://files.windowsofatlanta.com/uploads/1/3/1/4/131407655/62846ed44b43afa.pdfIn PDF document text
    • http://files.rockriverpetresort.com/uploads/1/3/1/8/131871642/3106816.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/1/0494/4448/7327/files/aiea_loop_trail_waterfall.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/warframe_fish_oil_tradable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9935/7338/files/free_fertility_samples_by_mail.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/8039/2344/files/formula_sae_rules_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4268/8154/files/jaxerowadamalorenekewuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/lafivapigikutalazozilide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4254/9145/files/zavaxepadosajemaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6303/3502/files/traeger_baked_potato_soup.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 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_off000069c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C8 5220 bytes
SHA-256: dd09b463f0a47307af38b86613222039d0cfabd0dadce9e52dbb95091b43941e
font_01_sfnt_off00007b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7E 14064 bytes
SHA-256: f33d0dc083ca35d66210379939ddac45b47bef9177b57f03a88cdd5a641ae436

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