Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe402c9711de178f…

MALICIOUS

PDF

39.7 KB Created: 2020-08-24 01:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ac2310383520d05de395f1ac028f973 SHA-1: e7c6f45ea74ddbce151eb148c81f77ffc412902a SHA-256: fe402c9711de178ff3994e49ac5ee788e0ca67fd62a8b5ccd2735df107c52fda
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this same URL and also references a link farm strategy with multiple Shopify-hosted PDFs. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to trick users into clicking the malicious link, likely to download a secondary payload.

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=mental+arithmetic+section+1+test+9+answers In PDF document text
    • http://files.annepauley.com/uploads/1/3/1/3/131380600/koxarixikesasi_rikeva_fixage.pdfIn PDF document text
    • http://files.living-practically.com/uploads/1/3/1/4/131406344/40b4b758f273.pdfIn PDF document text
    • http://zadinewib.evazimmermann.org/uploads/1/3/1/4/131453130/rurutu.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/1/0427/7361/0663/files/birod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5555/4455/files/95993630285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/14149165140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1117/6610/files/struts_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/navosega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/97636386638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6668/7642/files/83574274636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2857/7447/files/full_quran_with_bangla_translation_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7211/1260/files/alien_shooter_hack_version_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6241/1942/files/lemawasibafakit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/synonyms_and_antonyms_for_ssc_cgl.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 5

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_off00005be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE9 5344 bytes
SHA-256: 5db04e4951ed7c9f13117cf4133ef9c8d788afa62c1b39a347146fee93cf7f40
font_01_sfnt_off00006dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFE 10588 bytes
SHA-256: ddf14a1bfd738c6fdbfc44bace896d510bc5157ddb0fbe7e50d6639c22de8d4a

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