Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bdf4181c183aca4…

MALICIOUS

PDF

71.6 KB Created: 2020-08-20 11:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a7d8bd38e419f9f9ed1632777d74013 SHA-1: bc78eddf69a0e9afc6f56e8f16be9feaa1cb7b7b SHA-256: 0bdf4181c183aca47071cbd3dc4fbb5fb582a15941f51d5aee314455de16e886
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to a malicious URL, identified as a redirector. The document body, though heavily obfuscated, contains a reference to 'Crio 9057 datasheet' and the malicious URL, suggesting a phishing lure. The ML classifier also strongly indicated maliciousness.

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=crio+9057+datasheet In PDF document text
    • http://talibi.southwestpaddlecompany.com/uploads/1/3/1/4/131437812/babid_lemumini_jodikiku_losubudur.pdfIn PDF document text
    • http://files.kitsapcounselingservices.com/uploads/1/3/2/3/132303151/totitetigow_nanakog_dusuwukina_mojiw.pdfIn PDF document text
    • http://zibot.laurelschool.ca/uploads/1/3/1/0/131070450/1a118abbc59.pdfIn PDF document text
    • http://files.trihealthcoach.net/uploads/1/3/0/8/130814907/ribigupa_milojagaragusat_kifekevajot_retumexaw.pdfIn PDF document text
    • http://files.gmseatonauthor.com/uploads/1/3/1/8/131856072/tikotebowuzug.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/1/0432/0981/8274/files/wikuxanowanokifabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9364/6753/files/tafukevudunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/joxekududu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5719/2853/files/jokuxabetowidoninoposuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/48718403300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/cvcc_and_ccvc_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0810/files/street_fighter_legacy_full_movie_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8472/4889/files/vetarexapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3338/7423/files/34813323457.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 3

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_off0000d703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD703 5288 bytes
SHA-256: 9935c0139081d158957edfa167d70aa01154147101d693391a42723afba4ece0
font_01_sfnt_off0000e8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FC 12664 bytes
SHA-256: 9be27b6ba9d922dc5a309da780be254b8785512d35ba6b6433fb32d8f3681094

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