Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fca804048aea6d3…

MALICIOUS

PDF

36.1 KB Created: 2020-08-02 22:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e012ba18c897007296a9406f38f6ff52 SHA-1: 23de8234e744c748ab8366f8eeaf5144675ece8d SHA-256: 7fca804048aea6d35d7dd623eb07ce3a5ef90a5723cd17d97e8e64dde0461c2c
254 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.ru/pify?keyword=unity+key+codes'. The document body also contains this URL and references 'Unity key codes', suggesting a lure for free software or game-related items. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm heuristic indicates a phishing or scam attempt.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=unity+key+codes In PDF document text
    • http://files.tcounseling.com/uploads/1/3/0/7/130740210/jiferisumuwaxifi.pdfIn PDF document text
    • http://files.paullentzauthor.com/uploads/1/3/2/3/132303312/fagafuxoluteg_nogosa_sikadedolarin.pdfIn PDF document text
    • http://bagefelan.mindfulness-et-sport.com/uploads/1/3/0/7/130738914/2917051.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/1/0427/8904/4383/files/vipopavufukire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1006/3527/files/37098000030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8484/1124/files/70569444586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/44787876084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/rulezabudavuxisemot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1389/7368/files/venn_diagram_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/23454749270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0976/8600/files/97998647313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40573574370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/63910973826.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_off00005073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5073 4752 bytes
SHA-256: 37b28b4283cb8a28de42202ec8643868a4e1a3a4dee08bc670709ea7bc07cf35
font_01_sfnt_off000060c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C4 10308 bytes
SHA-256: 880353e46a34503144d6e534eaaadc456ca66e04bbc585dc72c3272de1427bb8

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