Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2bfde4cb735f17d…

MALICIOUS

PDF

47.5 KB Created: 2020-08-11 16:31:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 023622e911b6863844442fa4c313a3d3 SHA-1: 716d9d68ffb071d4f7bb996354410dc8ebccf4fa SHA-256: d2bfde4cb735f17d3e138af8d9ffa0aa8fffd4e99878176c9d259c45a809e112
194 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, with numerous embedded URLs. One URL, 'https://ttraff.ru/pify?keyword=cervical+lymphadenitis+pdf', is identified as a malicious redirector. The presence of a large number of external links, including those hosted on Shopify, suggests an attempt to distribute malicious content or engage in SEO poisoning. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the specific lure.

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=cervical+lymphadenitis+pdf In PDF document text
    • http://gixapu.graphicsadp.com/uploads/1/3/1/8/131856725/6845841.pdfIn PDF document text
    • http://files.hofstetterlaw.com/uploads/1/3/0/8/130813714/jajifes-dagesudajinu-japonuraba-sobulideraze.pdfIn PDF document text
    • http://files.chimscan.net/uploads/1/3/1/8/131857334/7b8b96.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/1/0431/2917/6232/files/26734669079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/letimetovonisajonaxalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/76453999814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/ziwisovuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7094/6456/files/mejuzowizorazefomobevef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/12916854593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7039/7339/files/57781059738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/arabic_words_meaning_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/aparatos_del_cuerpo_humano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2522/6152/files/satetukanenozefofudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/25380972628.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 3

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_off000068b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B2 5256 bytes
SHA-256: ed184b89c2f46cb26ebd49f0fabdacaaa0eacfe2e44c9ab5dc6441c4c969134c
font_01_sfnt_off00007a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6D 12560 bytes
SHA-256: 8f082f436594268a93d4b5a6ba664261fbad9fed69d624893537a0d079dc06cc
font_02_sfnt_off0000a347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA347 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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