Malicious PDF — malware analysis report

Static analysis result for SHA-256 f845b204a99c0a5f…

MALICIOUS

PDF

40.6 KB Created: 2020-08-21 12:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d68896e9651e631a37c1194ed2afde4e SHA-1: f4bea0fd7534b203e33a1c9064799108ff77373c SHA-256: f845b204a99c0a5f8615925a06cf116e300bdb4e8a25509747a6c67bc600f567
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to malicious sites. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, many hosted on Shopify. The ML classifier strongly indicated maliciousness, supporting the presence of a malicious redirector as the primary attack vector. No scripts were extracted from this sample.

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.com/pify?keyword=integrated+reporting+awards In PDF document text
    • http://files.pineforestanimalclinic.com/uploads/1/3/2/3/132302716/xijofili_jifilizikovaw.pdfIn PDF document text
    • http://files.shorelineuu.org/uploads/1/3/1/3/131380469/2529155.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/1/0429/9885/7891/files/36316216581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6332/8424/files/general_chemistry_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/koguralidemabizafufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/38919608428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1373/files/98491952539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/5081/9733/files/training_budget_template_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0254/3778/files/25554296016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9139/2664/files/rijarariba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8309/5452/files/zygote_formation_in_human.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/adobe_blackout_text.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 4

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_off00005d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D60 5124 bytes
SHA-256: 6f5b587386fcfbb607c2d4e3cb2d0f11ee2cf5003abc1a077aed40fada86e97a
font_01_sfnt_off00006ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE6 11604 bytes
SHA-256: 07e5904464e923d262cad0f9146f3e7c411652e78b4fcd80ec11412a180d9bc5

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