Malicious PDF — malware analysis report

Static analysis result for SHA-256 2539cf4434c7e3c0…

MALICIOUS

PDF

42.1 KB Created: 2020-08-20 00:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4356a45fc8a67d1b01dff260bacbcbaa SHA-1: 9587561b6f9487cb4e73a751ad242db3039631ee SHA-256: 2539cf4434c7e3c06f399f0e6391bfeffe2595458984197460efa594322c7858
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to obscure malicious destinations. One of the primary links, 'https://ttraff.com/pify?keyword=china+gate+3gp+movie+free', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'China gate 3gp movie free', suggesting a lure to entice users to click the malicious link. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing 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.com/pify?keyword=china+gate+3gp+movie+free In PDF document text
    • http://files.thepescenius.com/uploads/1/3/1/0/131070302/bimamoxexaz-nagojax-fulutok-rarigewesip.pdfIn PDF document text
    • http://rijof.mrslorenzscience.com/uploads/1/3/1/1/131164250/1341566.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/1/0432/0316/6369/files/momunugesoliviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2128194791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/58522491177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/39311299960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovovowegafakaroseras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9279/3757/files/fabajiwedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3041/3475/files/lubekubegulodobapixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1054/7099/files/rodoxebetenajufemadotil.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off000050c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50C3 5236 bytes
SHA-256: 01c839e2c980c3ad55a40840f507ccdc69a9a1d3a3d5d6b16dc21bc8cf92ba12
font_01_sfnt_off00006277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6277 10512 bytes
SHA-256: 0afabde26cab61218a72458edd9851a3129432735b933b904843c6c01ed40100
font_02_sfnt_off000086b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B1 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e

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