Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1f61234771e668…

MALICIOUS

PDF

34.4 KB Created: 2020-08-10 01:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef0a042ae65cd3d2f1175227d3688e16 SHA-1: 3b745c467a57a8e4ef4f2f3b803bb3862b2edf9b SHA-256: 9a1f61234771e668e0b4104cf8e2a34b601d374b891f4cf637c9cf3892afa9b7
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to direct users to a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=east+asia+outline+map+pdf. The document body, though heavily obfuscated, contains this URL and other links to Shopify-hosted PDFs, suggesting a tactic to inflate search engine rankings or distribute malicious content through seemingly benign links. The ML classifier strongly supports the malicious verdict.

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=east+asia+outline+map+pdf In PDF document text
    • http://files.southbayscooterposse.com/uploads/1/3/0/8/130874102/wekunijo-jifijuga-jepidumizikison-denaponokozuke.pdfIn PDF document text
    • http://files.learningsasia.com/uploads/1/3/0/9/130969389/3574405.pdfIn PDF document text
    • http://files.gwcservices.org/uploads/1/3/2/7/132710783/1462055.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/1/0431/7901/6360/files/42490571521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4934/4421/files/que_es_el_microscopio_optico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8048/2967/files/rukonudinoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/arte_de_la_real_audiencia_de_quito_siglos_xvii_xix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/37680583716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7716/3416/files/dugivopenogazabijilana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5342/4540/files/all_breed_dog_grooming_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/geometry_for_enjoyment_and_challenge_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/43797175332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4397/0463/files/80846366547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1073/files/82462005203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2854/5693/files/88038675671.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
🗂 Part of campaign: learningsasia.com 4 samples

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_off00004ae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE3 5048 bytes
SHA-256: 8c3eb286f7478f445dfbd3bce2cf6b950548af5ea416697d442e06b5c0c2c466
font_01_sfnt_off00005c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C03 9716 bytes
SHA-256: a2d0a81abe672349416da6c2caf0e6b41c30ba4ba28d07995d16e92d13a54c6c

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