Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8a6438f1ed52b2…

MALICIOUS

PDF

41.4 KB Created: 2020-08-18 15:32:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 689311ea84c948135ea3bba7cd4dc836 SHA-1: f3ca2ddf4b6b8d02f1aa46eaae178285b332476c SHA-256: 6f8a6438f1ed52b2972ae15d12749a88ec9f8c13b12bbbf4ac774ca5ea9f3bd3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'pressure ulcers treatment guidelines' and the malicious URL, suggesting a lure for phishing or malware delivery. The ML classifier strongly indicates maliciousness, and the presence of a redirector link is a high-confidence indicator of malicious intent.

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.ru/pify?keyword=pressure+ulcers+treatment+guidelines In PDF document text
    • http://loxudon.greenecountyunitedway.org/uploads/1/3/1/3/131384495/zakuru.pdfIn PDF document text
    • http://files.alleghanygrace.com/uploads/1/3/1/6/131606854/wakelirulo_dumakufen.pdfIn PDF document text
    • http://files.electricpantz.com/uploads/1/3/0/8/130813881/8473985.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/1/0435/4120/1064/files/ragewuwotufivejifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/figuziwesuxemefotumesuvoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/98199826998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/ralotebolefuzez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/8136140033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/fuzuvinokoraraponus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2718/4281/files/1829825666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1247/8360/files/78394136072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/24950106242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8487/files/joguwonug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9087/8372/files/xowon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/70680706676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/gta_v_emblems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/free_advanced_excel_tutorials.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
🗂 Part of campaign: alleghanygrace.com 4 samples

Related samples 2

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_off000064b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B5 5260 bytes
SHA-256: 2b416d60b5b7c8221b27391f4e5f6d3c01e6d41e576c0aeaf569c0f40416ed25
font_01_sfnt_off00007674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7674 10112 bytes
SHA-256: 4286e082fe6298d8cec01e9cd564fe773a61feb90d1b44ee0891ebbb577c986d

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