Malicious PDF — malware analysis report

Static analysis result for SHA-256 54123fc8bf528938…

MALICIOUS

PDF

50.2 KB Created: 2020-08-14 20:31:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2155ea27bc7a7b91cf5423e2481beeab SHA-1: 05b5c6878391f4a9d1c25da53fb9b7dc5ca226a4 SHA-256: 54123fc8bf528938d15167348c5333af608d8f23bbb9d0c9e0931fb888e0fc26
194 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.ru', identified as a malicious redirector. This link is presented within the document body under the guise of 'recovery worksheets for mental health'. The PDF also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive link.

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/wb?keyword=recovery%20worksheets%20for%20mental%20health In PDF document text
    • http://files.icihealthandsafety.com/uploads/1/3/0/7/130739288/8225453.pdfIn PDF document text
    • http://xilolito.dowhatyoulovenyc.com/uploads/1/3/1/4/131452903/pixuxoribesu-votanofisajaxe.pdfIn PDF document text
    • http://bokolix.usedlicense.net/uploads/1/3/1/3/131379678/bidaroberefipuw.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/1/0436/1139/0115/files/dugupofuzigonevogineluwok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6771/5234/files/nomenclatura_de_alcanos_ejercicios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5680/6553/files/wopux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1527/2605/files/paxobuxekebelifug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5721/5648/files/25493339031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0862/files/reverse_linked_list_leetcode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/will_county_assessor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/assamese_alphabet_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/vegofamibumamujavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/3590840061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3621/6229/files/94986033582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2080/4518/files/does_dns_use_tcp_or_udp.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 2

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_off0000857b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857B 5448 bytes
SHA-256: 4eed458f749ba76ab54f347eff44b50f6cc3b92fabecd369d6fe3a9d498d8b8b
font_01_sfnt_off000097f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97F0 10424 bytes
SHA-256: b414ac4965d10377523687b7783e8940490cac71a1a3f9a1d5c920fb5e970b35

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