Malicious PDF — malware analysis report

Static analysis result for SHA-256 24b1b1f7c4680675…

MALICIOUS

PDF

48.9 KB Created: 2020-08-08 07:34:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43ff6242e3713d485fb691d617a41f96 SHA-1: 72da98132696029b29d60df6810ee501ea5d7d6b SHA-256: 24b1b1f7c46806752674608f5fe9979a4a61e24287ca9b25785c1436c13a0222
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one heuristic specifically identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'keto meal plan pdf' and the malicious URL, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content.

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.ru/pify?keyword=jrf+keto+meal+plan+pdf In PDF document text
    • http://kiboxotel.nicholasadamswrites.com/uploads/1/3/1/6/131637881/nefamuneweju.pdfIn PDF document text
    • http://files.deeprootscider.com/uploads/1/3/2/6/132681772/vuxarokurebesuxupe.pdfIn PDF document text
    • http://mivepusij.lennysimagination.com/uploads/1/3/1/4/131406082/bizuwidol.pdfIn PDF document text
    • http://files.lasclasesdesenorag.com/uploads/1/3/2/3/132303082/pikabixawupopik.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/1/0440/8141/4296/files/45713845554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/wumesolobobizuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2690/5245/files/rexipexenagupapavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4756/8039/files/wusezesomexajafukozov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0080/7074/files/zawaxoxusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9338/4599/files/foweredod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faramerujinusopuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5235/1144/files/rugisavazusezuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/24298575774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1025/1176/files/vebajawaluruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/walaponorinofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/bejosonopaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8127/4278/files/berserk_2017_episode_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7809/0901/files/jakukevari.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8129 5064 bytes
SHA-256: 951fe06f2c5deb1edb4354dad8187715f76bf0a0e8441530105700b6b4f886f5
font_01_sfnt_off00009251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9251 10524 bytes
SHA-256: 6e358a1f1283ace2385f40200f785da8c0b86f54928ed2346a62ef8d5ed7e589