Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d82bdeeb16054e…

MALICIOUS

PDF

49.8 KB Created: 2020-08-10 23:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b68c95f05af631666ca2ded508f22ccf SHA-1: 2b09f4a6b538028e949e83385a3cdd49a25a63f1 SHA-256: f7d82bdeeb16054ee1cf06d96113b9dc0f34741f9ecf55fdfb4bf4b5f4645fa0
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links, 'https://ttraff.cc/pify?keyword=algo+trading+books+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to 'algo trading books pdf' and the malicious URL, suggesting a lure to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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=algo+trading+books+pdf In PDF document text
    • http://files.scenichillvacations.com/uploads/1/3/1/3/131381363/bafilob_polipapu.pdfIn PDF document text
    • http://files.plasynant.cymru/uploads/1/3/1/4/131407625/1376472.pdfIn PDF document text
    • http://doviti.gratiotdems.net/uploads/1/3/0/8/130813528/vexovojetegikorez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3018/4098/files/github_terminal_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9150/1990/files/kuxifipotetivewixosiwesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3593/4370/files/55724174860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2009/8472/files/nudufaselanaxuzufevegib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/32834818464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/wavinirepunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/69617132678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/89814012084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9679/9384/files/64937731147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/81327432635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5654/4409/files/1995_lexus_ls400_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/4835397444.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000776a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776A 5072 bytes
SHA-256: fb8f03c2b7e1c6a768955346ac56ce99699274517f54a188a7bf3de8f20ba140
font_01_sfnt_off000088a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A6 10516 bytes
SHA-256: f732fbc1bcc24ece133fa997e739369555e6c49a25eeca486ee44799eb46d2a5
font_02_sfnt_off0000ac5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC5A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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