Malicious PDF — malware analysis report

Static analysis result for SHA-256 936bb58d2e76a9db…

MALICIOUS

PDF

44.6 KB Created: 2020-08-11 10:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2029324df8bb9f98de9617708405f510 SHA-1: 44ed4cdb5fd7b455240ddd33fd84e85b6200b5ea SHA-256: 936bb58d2e76a9db478465a46eb995b04b1f5ad16759ee7b4d07ba7d9f32f8a7
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=hernia+hiatal+diagnostico+pdf', which is flagged as malicious. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to drive traffic to malicious sites. The ML classifier also strongly indicated 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=hernia+hiatal+diagnostico+pdf In PDF document text
    • http://files.binge-writing.com/uploads/1/3/0/7/130776489/4d035ab6c7a409.pdfIn PDF document text
    • http://files.mustangsmend.org/uploads/1/3/0/9/130969942/jurugejawotomot-rewisolazutunu.pdfIn PDF document text
    • http://files.canadianwatertechnologies.com/uploads/1/3/0/8/130874109/vegojipo.pdfIn PDF document text
    • http://jekizukar.ancestorscouture.com/uploads/1/3/1/6/131637814/xovunanasu.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/1/0431/6200/9755/files/lufipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/fubesadol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/joripukude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7011/9318/files/calisthenics_unity_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuvitew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9805/3539/files/os_carbonarios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6559/8364/files/ashokan_farewell_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/28907276821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6617/0271/files/60761408462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/buvodopozuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwakuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9725/1235/files/xajifamoketenebenepak.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 6

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_off000071a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A3 5380 bytes
SHA-256: 3ce15162303d14006cf8cd8be70524e4d6dcbf8f27dc4b00d3fc0e1d53bd85c2
font_01_sfnt_off000083de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DE 9916 bytes
SHA-256: ab9a6ec8f3fe81568be3188e2c97b904e342e43ed72cfd9d560f35d69b143a81

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