Malicious PDF — malware analysis report

Static analysis result for SHA-256 18fe1e44685c9f8c…

MALICIOUS

PDF

99.5 KB Created: 2020-08-03 03:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 227ce5e324d8760c9ae7b6a62314fda0 SHA-1: 438503f28f26aec82d196a2c2d52c612cefc1c3d SHA-256: 18fe1e44685c9f8c75a1f9c90113fc0f029464cb9b07054a8bab3328ac060de4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links and text that strongly suggest a phishing or malware distribution attempt, masquerading as a game patch. The primary malicious URL, https://ttraff.ru/pify?keyword=unofficial+oblivion+dlc+patch, is flagged as a malicious redirector. The ML classifier also strongly indicates maliciousness.

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=unofficial+oblivion+dlc+patch In PDF document text
    • http://files.themistyvalley.com/uploads/1/3/0/7/130776358/4544562.pdfIn PDF document text
    • http://files.sutterlafco.org/uploads/1/3/1/4/131437018/4742983.pdfIn PDF document text
    • http://files.1000menempowermentlaborfield.com/uploads/1/3/0/8/130814055/sekidetaxim_lasepokekepuga_wugeresoz.pdfIn PDF document text
    • http://files.flatrockfragrances.com/uploads/1/3/1/3/131381679/watevidiru.pdfIn PDF document text
    • http://files.quantedge.org/uploads/1/3/1/3/131398532/vowivusejevovupov.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/1/0428/9835/8432/files/66916333827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9825/7048/files/17942913197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8702/6590/files/force_checkout_git.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/zubezobipinakidanodeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0880/2466/files/44984130714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/famoxefeximi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/41027634441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3073/9106/files/joxebepipugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/sumojuguruzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3756/4839/files/i2c_scanner_arduino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6756/3418/files/56175932781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/nizefimelopagatumibevi.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_off00014741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14741 5160 bytes
SHA-256: 8233f96e0dec35b993a998934ba247a834e847b55581616d0070fc7ac560b4d0
font_01_sfnt_off000158da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158DA 12208 bytes
SHA-256: 77f25cb69f4e2143220d53aa8cb5481d9d0e15de5e5d78f681c3ae7070c270e9

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