Malicious PDF — malware analysis report

Static analysis result for SHA-256 81e65a8c65c15515…

MALICIOUS

PDF

39.6 KB Created: 2020-08-26 22:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8923d6cb6bcbc1cfc775e1c92902f82e SHA-1: fbeb9909238148eaff15bb9cb6abf39520bffe02 SHA-256: 81e65a8c65c15515a667689df328f91dc394fd1082e70fb45f7c8c70087cfe89
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) that is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the same malicious URL, suggesting an attempt to lure users to a phishing or malware distribution site. The presence of multiple PDF links, including those hosted on Shopify, indicates a link farm designed to improve SEO for 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.ru/pify?keyword=the+lion+king+part+1+hindi+dubbed In PDF document text
    • http://files.oshkoshconcreteinc.com/uploads/1/3/1/1/131164351/rasizir.pdfIn PDF document text
    • http://files.evangelcommunitychurch.org/uploads/1/3/0/8/130874437/vomopuvuwo.pdfIn PDF document text
    • http://files.coachharris7.com/uploads/1/3/1/3/131382680/5856621.pdfIn PDF document text
    • http://files.ccceinc.org/uploads/1/3/1/6/131606630/ruwifadedosojexuxo.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/1/0430/8713/4882/files/mapa_geografico_de_bolivia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1161/8462/files/vebiropemekezenevetaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/92424105848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8253/7365/files/4398715053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/8750/8135/files/the_anatomy_of_revolution_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6903/8749/files/gcse_biology_paper_1_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2335/1458/files/similegaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2737/2964/files/pejutufus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/33721780444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1629/6360/files/7134139886.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D80 5248 bytes
SHA-256: be29c819f20e9eeaaafa01ac7876700c30b5d5d4fe68adaf39aad66fd8a7415a
font_01_sfnt_off00006f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4E 10076 bytes
SHA-256: 06c249b4e15b73e8c3c3fe26f4e3edf10fd4702314a46f783958688260bafa93

Open this report in the interactive analyzer, or submit your own file for analysis.