Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d28ceb6c3c40626…

MALICIOUS

PDF

39.4 KB Created: 2020-08-25 23:12:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f87d9f70c6883c7bb469adfb8274f80e SHA-1: 445a5f3c7c764a663dfdb538286374516fb8ca4b SHA-256: 9d28ceb6c3c406266bb6b882d5c56dfdd0bde592f93d786ecd95960a6caff3e8
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. This redirector is likely used to obscure the final destination and potentially deliver a malicious payload or conduct a phishing attack. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick the user into clicking a link. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack vector.

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=emergency+contact+mary+choi+epub In PDF document text
    • http://wopebedab.theflorecerproject.com/uploads/1/3/1/3/131379478/masedejasurekawuwe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/51039073356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/7977054886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/bibosikuxitogomufutatox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30347825404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1657/6424/files/6124949142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1442/2677/files/84709952109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/53433700803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/80266279255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/miditifisozemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6631/8230/files/nonivinetujikomof.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5009 5220 bytes
SHA-256: 3a11fe68da88a1600feb3c4e4fa452b994728c140d9c6f8b9e5e819355775c78
font_01_sfnt_off00006193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6193 9700 bytes
SHA-256: dcd330722c614e268fb21ce16a120617e7e4294a8b4ca98f76c3183bf0e0f905
font_02_sfnt_off000082cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CD 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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