Malicious PDF — malware analysis report

Static analysis result for SHA-256 0741aa23821a9eb5…

MALICIOUS

PDF

41.4 KB Created: 2020-08-23 09:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d6796b34e321b797c6bd59eae0c0390b SHA-1: 73c1d65c01402cbf35e3a93bb807be82b90626cd SHA-256: 0741aa23821a9eb5024433801bdbfdb848ac6013025eb7e227c30c6c7efb118b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The primary redirector URL is https://ttraff.ru/pify?keyword=caustic+3+trap+pack, which is likely used to funnel victims to further malicious content or phishing pages. The presence of multiple Shopify-hosted PDF links suggests an attempt to create a link farm for SEO manipulation, potentially to improve the ranking of the malicious redirector. No scripts were extracted, but the heuristic firings strongly indicate a redirection-based attack.

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=caustic+3+trap+pack In PDF document text
    • http://files.aitech4u.com/uploads/1/3/0/7/130776484/tirapilofenaweb_fanalidojeta.pdfIn PDF document text
    • http://getap.screenenclosurepros.com/uploads/1/3/0/9/130969060/pobivorefakedo_bazunufokol_siwapijumulata_pubosebetu.pdfIn PDF document text
    • http://jebuna.windycedarslabs.com/uploads/1/3/0/9/130969130/ruwevu_xenewukeg_kumakelixosowi_fadimis.pdfIn PDF document text
    • http://files.womaninchair.com/uploads/1/3/0/8/130874246/degelizapi.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/1/0428/5884/0223/files/32547736123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37357510366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/13809233620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6209/1167/files/comment_faire_une_bibliographie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2504/6431/files/86159397678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5104/8357/files/nivafok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/tasuxiwew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1561/9239/files/fajokiwusijefogaduse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4282/4611/files/17167153780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6565/4946/files/kimaguderetelodune.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 3

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_off0000648f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648F 5028 bytes
SHA-256: 214e1e69b6fdf07698faa8b1587f636c3db24ff561b92446c0c5fbaa5183522c
font_01_sfnt_off000075b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B3 10552 bytes
SHA-256: 7f613ef093ce67b33ca609d2c8caf8797e03e298cd69c949ee590fb4f1a6271d

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