Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd51040fd94ba5c5…

MALICIOUS

PDF

40.2 KB Created: 2020-08-30 00:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92c95d44423c8facbc763488c08df813 SHA-1: f66aebd4ff3878df8421f15ba87c552c13b242b4 SHA-256: fd51040fd94ba5c58a6822bba6ccbcab7e41c6b6bcf88796abd3fdbd18826183
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=stihl+020+avp+repair+and+parts+manual+pdf'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links to Shopify, which is flagged as a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content through seemingly legitimate channels. The document body itself contains garbled text but includes the target URL.

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/wix?keyword=stihl+020+avp+repair+and+parts+manual+pdf In 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/1/0430/6550/8002/files/sioux_city_ia_police_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/53309151382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6083/0103/files/dipopuborejunuzegomibobox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/35419803570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/40221773787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2788/2133/files/91000220925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4947/4453/files/you_before_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/38969937399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/dolit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/pass_it_on_kurt_kaiser_sheet_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/runuwadobona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/jovesirafezeboja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/55566171054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/12_note_kalimba_sheet_music.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53BF 5720 bytes
SHA-256: a85db8afe75c2f62e12deba31877108f1e032511c5e37de8b8d21663b0efe5bc
font_01_sfnt_off00006704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6704 1936 bytes
SHA-256: d2cd98eda3bb301c349f83497b116709750aa4c373c9bd198ee53ee8aab646d3
font_02_sfnt_off00007046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7046 10308 bytes
SHA-256: c3dfc83bdaed251326b6c49effcd8a54eb1fd685f05ef8ba7e5e7c6916d94a6d

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