Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5085fe7840e31c…

MALICIOUS

PDF

45.8 KB Created: 2020-08-25 14:37:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc0b439b3e75120517067532b4f89986 SHA-1: b94a235dfa26d1e2213a6c825f69b7faaa8bdd7d SHA-256: 3d5085fe7840e31c357df24ec9cb4827a02d701d784d09851dc8e7cffb20cc6c
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel users to further malicious content. The document body, though heavily obfuscated, contains this URL and appears to be a lure for a guide. The presence of numerous external PDF links, many pointing to benign content on Shopify, suggests a link farm or SEO poisoning tactic to increase the visibility of the malicious redirector.

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.cc/pify?keyword=craft+the+world+guide+deutsch In PDF document text
    • http://zibujen.lakeodessaarts.com/uploads/1/3/1/4/131454215/tosivepekivo.pdfIn PDF document text
    • http://files.havanarb.net/uploads/1/3/0/9/130969728/c5a7f42985.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/1/0429/8617/6665/files/writing_task_1_general_ielts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4718/8640/files/50437364175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/13468380801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/budenirononukejeno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/fegojunodam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/pidovogufurerewoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7080/7459/files/batman_the_dark_knight_returns_comic_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3140/3413/files/airbrush_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7347/8296/files/aerodrom_beograd_informacije_o_letovima.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00005fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB5 5280 bytes
SHA-256: 99812fd5beff25667f31c8e14f0d5dfd065f04a41a6b7149fa26177e13e9ab40
font_01_sfnt_off000071b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B9 10400 bytes
SHA-256: cd2e85ca8b997da542bebff7c0729a0efa246008b9402b54f7b146fe401d48c8
font_02_sfnt_off00009540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9540 16204 bytes
SHA-256: 514ec34c774379c82780ce3b826aceada3291152a2a4734d997485cf707bbc49

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