Malicious PDF — malware analysis report

Static analysis result for SHA-256 353f36ccc2b877b5…

MALICIOUS

PDF

34.2 KB Created: 2020-08-13 04:26:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d57eedc24813ab18f4fdc0e2d49f6a7 SHA-1: b120a4e9e75acf4cddad23a6c230cb70d6bd8b68 SHA-256: 353f36ccc2b877b531e0cafdc3d818c51898959617ae6c0995a1872b55a49935
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign Shopify URLs but also including a critical redirector link to ttraff.com. The document body, though heavily obfuscated, contains text related to a 'filipino english dictionary pdf free download link', aligning with the SEO link farm's deceptive purpose. The presence of a download button lure further supports the malicious intent of redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=filipino+english+dictionary+pdf+free+download+link In PDF document text
    • http://files.mdt-agilityability.com/uploads/1/3/1/3/131379894/kiseg.pdfIn PDF document text
    • http://files.osfrun.com/uploads/1/3/1/4/131437599/paxokuvegeru.pdfIn PDF document text
    • http://files.savefmcp.org/uploads/1/3/0/7/130739699/f574550d9265.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/1/0437/6713/6413/files/city_quest_runescape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7391/9393/files/asfixia_perinatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1285/6731/files/vufafazubunusibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nujogopuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/pong_game_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0418/2173/files/wejorufit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/waposomiwomobigose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5451/1766/files/the_cancer_journals_audre_lorde_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5824/4257/files/catia_training_material.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4874/7676/files/gudejezeviwese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/kixapefetakisolove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0999/files/jolirakakozoderuz.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_off00004646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4646 5628 bytes
SHA-256: 1818e966e51f7c689f88ba0b830b60fd625278fa690c8fa58ec031540a37b58f
font_01_sfnt_off0000597c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597C 9964 bytes
SHA-256: d2df5e71ba50378694ecf7746d2cbfdb4c957e81e3f07293d028423879dc6804

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