Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d3fba14cf617d1d…

MALICIOUS

PDF

37.1 KB Created: 2020-07-31 05:04:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e93c936a25670ec49934f968a926a862 SHA-1: 3afc4168d90bb470445987af3679fdaa4ffd776c SHA-256: 7d3fba14cf617d1d1925b64f5176ab53e5ae2720eb4fd9c79cc9a1f75716201e
194 Risk Score

Malware Insights

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

The PDF contains multiple links to a redirector service, specifically 'ttraff.ru', which is flagged as malicious. The document body and embedded links suggest a phishing lure related to educational materials, aiming to trick users into visiting the malicious URL. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to distribute the 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.ru/pify?keyword=cambridge+english+second+edition+advanced+trainer+answers+pdf In PDF document text
    • http://files.esace.com/uploads/1/3/0/7/130775033/vokelofodux.pdfIn PDF document text
    • http://files.raymondbonterdesigner.ca/uploads/1/3/1/8/131856129/vagokojoba.pdfIn PDF document text
    • http://files.ashlandkitchenevents.com/uploads/1/3/1/4/131452880/wututab.pdfIn PDF document text
    • http://files.painsfireworks.net/uploads/1/3/1/4/131437984/0500239.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/1/0432/3377/1688/files/gigovusemazopata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5287/6455/files/fimewiranupovit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/80876111065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1991/7717/files/kulodovetulanabobuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7969/5526/files/jisoxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/nawomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8670/7876/files/lowudidis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6401/6539/files/zebelam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0928/6042/files/lawadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/fazizanibejiwudejumig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/45539217352.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 7

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_off00005658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5658 5672 bytes
SHA-256: 343863fd6f37cec245d294a786028f21583d08da524577b408a918129b31087c
font_01_sfnt_off00006986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6986 8560 bytes
SHA-256: ff1bcaa83b58a546d227c4f7f06b2ac3c2b53c37cbca37dcc07999143770e697

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