Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92882f3a6eaec2a…

MALICIOUS

PDF

39.8 KB Created: 2020-08-14 03:27:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab5ee4392e65f6de6523933dfb5c8a37 SHA-1: 04cbb21677ef7c01106ee5ada26845fbaf74d246 SHA-256: c92882f3a6eaec2a750f9e8c1b6731a2a41ec55dfb5947c3c0db57aec33ca768
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a direct link to a known malicious redirector, 'https://ttraff.ru/pify?keyword=umich+course+guide+ross'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous PDF links, many hosted on Shopify, indicates a tactic to obscure the final destination and potentially leverage benign-looking domains for distribution.

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=umich+course+guide+ross In PDF document text
    • http://files.fountaincityfc.com/uploads/1/3/1/3/131398333/furojagoboxel_rosabafonowoni_rirod.pdfIn PDF document text
    • http://files.whipcityshields.com/uploads/1/3/1/4/131483249/pekujoresunodas.pdfIn PDF document text
    • http://bojobod.miltonunitedmethodist.org/uploads/1/3/1/4/131438079/vawexaduluzow.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/1/0430/3070/8385/files/relivupedipivojesizokepex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/familia_lamiaceae_caracteristicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/72411038393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3062/0832/files/analyse_stratgique_et_avantage_concurrentiel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2379/4339/files/91165439993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0722/9597/files/vofopugomadilomegin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1376/3235/files/understanding_canadian_business_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/80962344004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9562/9725/files/xidapewolijana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/bosque_tropical_humedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/9579720346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2296/7206/files/windows_xp_32_bit_iso_download_microsoft.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 8

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_off00005fb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB6 5100 bytes
SHA-256: 7a32de9bb4c67c5ec2dc75c1865c77c01d25dd0a22a92bf22d1e756125c3de47
font_01_sfnt_off000070e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E6 9936 bytes
SHA-256: 96a4486b2697db9d70d730bb386f1983ef21fd00d686e0e50a2afd4eca29a93d

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