Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b81194f0c80c1a6…

MALICIOUS

PDF

35.2 KB Created: 2020-08-10 02:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 500124adb2d5469891b9eed1fba5f574 SHA-1: d879d0191e73f0ce640ca9d94856008d26f3e358 SHA-256: 8b81194f0c80c1a6ca84ded697fac2480a37842c65f3d79a43eac203a7912903
202 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/pify?keyword=bukhari+sharif+urdu+pdf+free+download'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The presence of a 'download button' heuristic further suggests a lure to click these links. The primary malicious IOC is the ttraff.ru redirector, which likely serves as a gateway to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bukhari+sharif+urdu+pdf+free+download In PDF document text
    • http://files.hairtieandpecanpie.com/uploads/1/3/1/4/131483249/7159150.pdfIn PDF document text
    • http://files.placement-ebp.org/uploads/1/3/0/8/130813366/gorakesejugawigi.pdfIn PDF document text
    • http://files.ourconsciousconnection.com/uploads/1/3/2/7/132740763/lupef.pdfIn PDF document text
    • http://files.jeongyang.org/uploads/1/3/1/3/131380728/4415450.pdfIn PDF document text
    • http://files.chloebbportfolio.com/uploads/1/3/1/3/131380612/8523922.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/1/0431/4919/7472/files/smokey_bones_nutrition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6792/4899/files/36974407551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/82831220357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/pals_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/76060699541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3867/7924/files/jaboxarakovakemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/refitapobofubogiwimubik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3147/7922/files/sipemikabir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2815/8363/files/sirofuko.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_off00004c67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C67 5336 bytes
SHA-256: acdccd503d3e27e077436ad7d6d47c9146d41f2985b0dbfcaa43af5d54d75e99
font_01_sfnt_off00005e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9B 9672 bytes
SHA-256: b9c637cc771da192078268dfe24c7dfc246de99b01c96c9d881a5cf9a0bf2ec3

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