Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e8ef341578e715…

MALICIOUS

PDF

49.4 KB Created: 2020-08-05 11:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e205837aa907072e4d1b3cacba7bfd1c SHA-1: 01bbcea01a21e09bd42248c76cf7d86845cf39ee SHA-256: 75e8ef341578e71548458cb2c17cbfdeb003dae18e2972f6981443d8c9e27d1f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains the same redirector URL, suggesting it is the primary lure. The presence of many SEO-optimized PDF links indicates a link farm strategy to distribute the malicious content.

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=renal+dialysis+procedure+pdf In PDF document text
    • http://files.birchfieldpractice.co.uk/uploads/1/3/1/4/131455463/jojulixerigiwag.pdfIn PDF document text
    • http://files.yoloinbiology.com/uploads/1/3/0/8/130814588/532568fdad.pdfIn PDF document text
    • http://files.arsenicofjabir.com/uploads/1/3/1/4/131406274/nokobexusokabok.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/1/0434/0006/9285/files/football_world_cup_2020_fixtures_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4793/4359/files/cultivation_of_cocoyam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/2184578217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0593/4757/files/44870681636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/voverowagimemudepitad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/learn_french_language_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/48893036988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/botoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9113/1557/files/6558643806.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C3 5060 bytes
SHA-256: 4e5c7c47cf6731abb6deb62cdbc03d0c4dbdb2d7f30046c04b44246bb8dd790c
font_01_sfnt_off00008705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8705 10432 bytes
SHA-256: 84e50b28373f01e5e48fe67705ee8de41dc6e37f7583b204e5cce2c021a211f5
font_02_sfnt_off0000aab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB9 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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