Malicious PDF — malware analysis report

Static analysis result for SHA-256 b461de315e32c3e7…

MALICIOUS

PDF

38.8 KB Created: 2020-08-01 03:26:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9df8a0ca41455b9c12cc0eca9fcfbacb SHA-1: e80dacb339be75ef057ab642db9de3610f08fd2a SHA-256: b461de315e32c3e7645fc65fb58be5b6d015d0bfd121051fc72dd2d67d0a2440
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is further disguised by a 'visual studio redistributable' keyword. It also exhibits a PDF link farm heuristic, with numerous links pointing to Shopify domains, one of which is also present in the document body. The presence of a download button lure reinforces the social engineering aspect of this attack. The document body itself contains the malicious URL and several other PDF links, suggesting a delivery mechanism designed to trick users into downloading further malicious content.

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.com/pify?keyword=visual+studio+redistributable In PDF document text
    • http://files.lyc.ca/uploads/1/3/0/7/130739892/nigimevukubepus.pdfIn PDF document text
    • http://files.susancoffeylmt.com/uploads/1/3/2/6/132695306/mojezeladolew.pdfIn PDF document text
    • http://files.upwardfacinglife.com/uploads/1/3/1/4/131436971/velolerulamur_baxafijirun.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/1/0430/7940/1634/files/kifokosezolibozizajes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1077/files/tuwusilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/kugexapifojaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/wijatotegugataworotib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/10194212191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1752/7715/files/75608042885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/deved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/13634889286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/monazata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7881/0789/files/31605613628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/pimetenimufar.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 8

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_off00005b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8F 4924 bytes
SHA-256: 3ce615942f44a0fd54c47d39a1616a8abd4b4341befa302554c4612cf9f724cd
font_01_sfnt_off00006c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C55 9980 bytes
SHA-256: d7ce01c5bb42f107ee77496863fbbff2232d68ae2967015f1c051063115bef35

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