Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c1204b1b686e667…

MALICIOUS

PDF

40.2 KB Created: 2020-08-01 06:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21199f9ddb48f075fcaa3a9f48d247c7 SHA-1: fa33fefbcaf4ba2435b74b85a7c729e9360e9e9d SHA-256: 9c1204b1b686e667a240c5de5ed5280ef17d8585f3e78d7e2533a15510aba750
194 Risk Score

Malware Insights

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

The PDF contains a deceptive message and a link to 'apply update from adb', which redirects to malicious infrastructure at ttraff.com. The document also features a large number of links to external PDFs hosted on various domains, indicating a link farm designed to manipulate search engine results or distribute further payloads. The ML classifier strongly flagged this PDF as malicious.

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=apply+update+from+adb In PDF document text
    • http://files.sebringangels.com/uploads/1/3/1/4/131407102/6789364.pdfIn PDF document text
    • http://files.hollenbecksclass.com/uploads/1/3/0/7/130739063/jewewudupu.pdfIn PDF document text
    • http://files.nickelcityalchemy.com/uploads/1/3/1/6/131637546/5866685.pdfIn PDF document text
    • http://files.hcates.com/uploads/1/3/2/6/132695629/7803390.pdfIn PDF document text
    • http://files.mrsreid3rdgrade.com/uploads/1/3/0/7/130775734/tamimefil_zezigeni.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/1/0428/9835/8432/files/medade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/rojatesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/goger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zizamazigunonafimav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4020/1109/files/biwoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/zomurivurawixapakefaxob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/72556504080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5625/7441/files/17034983562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6901/4165/files/68561376468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0364/9954/files/55460333912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/dogexixepun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/9755974504.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_off0000608d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608D 5240 bytes
SHA-256: f9f28e0d597246949ab747aa9e6a7b4b4c984061279dc2095618d704aa20829e
font_01_sfnt_off00007252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7252 9952 bytes
SHA-256: 9bb1063ea83a7f8dc4c0e1ad53c1d71864c17ff44df828b96585806019a49da9

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