Malicious PDF — malware analysis report

Static analysis result for SHA-256 d597f76fdb27556b…

MALICIOUS

PDF

47.1 KB Created: 2020-08-08 05:22:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5955dbc8d0375cb88e6f8134f129b423 SHA-1: 40271144abe4e8590760366e595646715f813887 SHA-256: d597f76fdb27556b53b99090f1ca9061289f24a46f218f456f3743f6c512f026
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'flight ticket form pdf' and the malicious URL, reinforcing the lure. The primary attack pattern involves tricking the user into clicking a malicious link that leads to further compromise.

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=flight+ticket+form+pdf In PDF document text
    • http://files.friendsofparkswf.com/uploads/1/3/0/7/130739004/436414c618b.pdfIn PDF document text
    • http://files.cog7denver.org/uploads/1/3/1/0/131071157/9236544.pdfIn PDF document text
    • http://xawibir.gospelhillministry.org/uploads/1/3/0/8/130814411/6d11e88e66c3.pdfIn PDF document text
    • http://files.sruthilayaa.com/uploads/1/3/1/4/131407571/6128424.pdfIn PDF document text
    • http://files.cherryhurstcivic.org/uploads/1/3/1/4/131406506/titidimekipizere.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/1/0434/4964/7270/files/82169109610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7301/9808/files/nuxewaxagisapar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2906/7933/files/hernia_de_hiato_en_perros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/kulibapegipoxekigewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/sufuditigujafuxez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1954/1416/files/wujaneviwoforuzajuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/tibageraji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/bememirerapabokamelen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9753/8203/files/pojekatiseta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/execv_vs_execvp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8951/1071/files/fojenumugafakotir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/kiligemogazi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7B 4880 bytes
SHA-256: 96b72eb932a7df68d9b4fabaff7d65de6bf2a28a26c58741a507bdaa3a236798
font_01_sfnt_off00007e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1D 10404 bytes
SHA-256: 39628c96acf839c4e841e6f03bfdb3680626e96d628551bfee1ae09b1c59d20d
font_02_sfnt_off0000a1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1AC 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378