Malicious PDF — malware analysis report

Static analysis result for SHA-256 523d892bac092941…

MALICIOUS

PDF

64.6 KB Created: 2020-08-17 05:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9bf76822421e409e1d246804b4296169 SHA-1: 48f4c62c6b59b1ec60290d40a3d5460b91637819 SHA-256: 523d892bac0929418bc436652d05e135b29c589e0deed6a157eb57ae75f5f13e
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm behavior, with numerous links to Shopify domains, likely for SEO poisoning or to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to download content.

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=ahmed+chawki+tsunami+song In PDF document text
    • http://files.sobla.net/uploads/1/3/1/4/131483138/nukusunuvep.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/1/0434/5122/0134/files/22422549517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/diagnostic_imaging_obstetrics_woodward.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/munuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/58637706632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1011/3188/files/78280064017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/zikigupodivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6874/2046/files/lusty_argonian_maid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8547/7541/files/39982163221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6518/0321/files/titanium_backup_app_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/ramevebefewawerova.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 1

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
stream_006_off0000c461.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC461 26960 bytes
SHA-256: b029391aed143837323f78709a3462e1417486c001b543848d305c1c46b7b03e
font_00_sfnt_off0000856f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856F 5368 bytes
SHA-256: ca15f0881a5356269aeadbd0c7674e7a42148274e2fb6c58df11b1fd64e0b7c3
font_01_sfnt_off0000979f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x979F 14408 bytes
SHA-256: 320c61c696d4d8da1a325b06224335fb274b839653188230aeb2ace1e3b4435e

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