Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ed157b563ff88d…

MALICIOUS

PDF

42.6 KB Created: 2020-08-03 03:23:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2731a9744771c73b04bdaf6e9dee897b SHA-1: c4149d4a6aae977246c7e90e52a1216f97f56a09 SHA-256: a2ed157b563ff88d758d07ab738e865b105acfe6391f75057c7e37cd6cd6425c
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a large number of embedded links, many of which point to a redirector service. This suggests a link farm or redirection attack designed to obscure the final malicious destination. The presence of the URL 'https://ttraff.com/pify?keyword=waiting+for+table+metadata+lock' strongly indicates a redirection attempt. The document body itself contains garbled text and embedded URLs, further supporting the redirection attack vector.

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.com/pify?keyword=waiting+for+table+metadata+lock In PDF document text
    • http://files.isstx.com/uploads/1/3/0/7/130739697/fofigimab-xosatuwen.pdfIn PDF document text
    • http://files.casa-collective.com/uploads/1/3/2/3/132302913/rabepakesimeg_petawagalusep.pdfIn PDF document text
    • http://files.msmarlenesoffice.com/uploads/1/3/0/7/130775108/getogew-varutuxo.pdfIn PDF document text
    • http://files.castervaria.org/uploads/1/3/1/3/131398542/4189276.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/1/0430/1943/6185/files/unity_enemy_follow_player.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6793/9743/files/negivitenurikenudaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/50748583433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1763/3945/files/90034583905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/digogogerelow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5022/8119/files/duziwapam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/7897819584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/35344614561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/ffxiv_dps_overlay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/sakino.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_off000068ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68AD 5380 bytes
SHA-256: 993e9cc344830bf8140b484b30f0ee277a03bf2b38c8092ed808453787bd0273
font_01_sfnt_off00007af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF8 10152 bytes
SHA-256: 3bfcf5da7b79a20805da7bd65a676b671149ca14db697cdefb61d881f7e8c8af

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