Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f35813fe20d72d1…

MALICIOUS

PDF

40.9 KB Created: 2020-08-04 16:17:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cae07c5ecea4ea652d6779e6328727b SHA-1: bd35c6a2b44fa795012f8680e3e4b5bf754a4246 SHA-256: 5f35813fe20d72d1302f35bba708e70271951353ea76d5aecea34678b74d66e9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, many of which are part of a link farm designed to appear as legitimate PDF downloads. The primary redirector URL, 'https://ttraff.cc/pify?keyword=opposite+words+in+english+pdf+file', is flagged as malicious and used in an image lure, indicating a phishing attempt. The document body itself contains obfuscated text and the malicious URL, further supporting the phishing lure.

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=opposite+words+in+english+pdf+file In PDF document text
    • http://files.colorfulkauai.com/uploads/1/3/1/6/131606563/zojigagorobuge.pdfIn PDF document text
    • http://files.fromanestonian.com/uploads/1/3/1/4/131453429/3a5924d9a001b.pdfIn PDF document text
    • http://files.lexdi.org/uploads/1/3/0/7/130775014/7410255.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/1/0428/9173/9295/files/wikobisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/historia_del_calvinismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6958/8124/files/18850135607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2182/7222/files/kevosimuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/guvudoliguvora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/asvab_arithmetic_reasoning_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4117/7256/files/64659807442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7075/7791/files/1614155018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/47659690711.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EC 5212 bytes
SHA-256: dfe2160781bb9532a6a4dacaa51e81309dc8e614e93959835b3c29b0fbafb828
font_01_sfnt_off000077b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B1 9248 bytes
SHA-256: f793c65de1c018f21b7ca91659207a622d0e6ebe76670db6191f8746a39662e6

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