Malicious PDF — malware analysis report

Static analysis result for SHA-256 791d49f7aa6a6253…

MALICIOUS

PDF

33.6 KB Created: 2020-08-11 16:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b0c4d346b933c08a6c59bf11c6d2fb0 SHA-1: 9d1988fea62f8f12f57ac04f3b86b09d51d91940 SHA-256: 791d49f7aa6a625306eeab5f74637aae0db8bd41e06fd50bb260aa7739905e3f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to external resources. A critical heuristic identified that some of these links lead to known malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=warsaw+pact+ground+forces+osprey+pdf`. The document body, though heavily obfuscated, also contains this URL, suggesting a phishing or malware distribution attempt. The presence of many Shopify links, some marked as benign, may be an attempt to blend in with legitimate 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=warsaw+pact+ground+forces+osprey+pdf In PDF document text
    • http://soporasaw.meacorsigns.com/uploads/1/3/2/8/132814930/1f40d90b.pdfIn PDF document text
    • http://lobotu.equityfinancetaxservice.com/uploads/1/3/1/8/131856726/c2340b59f908a.pdfIn PDF document text
    • http://files.sheilasplace.com/uploads/1/3/1/6/131606475/nunoro_negapofedi_dafivelu.pdfIn PDF document text
    • http://files.if-airfranceklmva.com/uploads/1/3/1/4/131406885/6e59c39ab7a4.pdfIn PDF document text
    • http://files.youngerman-art.com/uploads/1/3/1/3/131380158/tularenekug.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/1/0431/1462/7234/files/character_traits_in_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/pasufibijaxipifoger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/vehicle_system_dynamics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1041/3976/files/cognitive_appraisal_theory_of_emotion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5016/2583/files/lujexidowonuduzidugozew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/mefopunizidozojokovugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/harvey_accumulation_by_dispossession.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1239/9009/files/jodokojinizatobugaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8774/8519/files/ameline_eric_sammut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9186/1410/files/13620936251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8223/4521/files/john_lennon_beautiful_boy_lyric.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/36631741215.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4641 5500 bytes
SHA-256: 85c0e3f9e5bd875377121ebf3a9d7e38ab42e8a78a749fb289baed51ab9ba9df
font_01_sfnt_off0000591f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x591F 9412 bytes
SHA-256: 5096e9ccdce38996e5781899eaf05f352c6d0d924491c960fb316fed7e258c81