Malicious PDF — malware analysis report

Static analysis result for SHA-256 353192e38de3de54…

MALICIOUS

PDF

70.1 KB Created: 2020-08-26 03:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4229c590a1362ad598c38a1f984db101 SHA-1: b524269e054b35bd80ee73d5a4ed5e37af416498 SHA-256: 353192e38de3de548b8bc46e338e8e2d6e46f188500ec45f4f36a8688ef4e4e6
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a book summary. This suggests a phishing or malware distribution attempt. The PDF also contains a large number of links to external PDFs, many hosted on Shopify, which is characteristic of SEO link farm abuse to obscure malicious activity. No scripts were extracted from this sample.

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=resumen+del+libro+calidad+productividad+y+competitividad+la+salida+de+la+crisis In PDF document text
    • http://files.theangelicdebt.co.uk/uploads/1/3/1/3/131398561/visitiva.pdfIn PDF document text
    • http://files.ssespta.com/uploads/1/3/0/7/130776661/1511188.pdfIn PDF document text
    • http://files.cottonginmuseum.org/uploads/1/3/0/7/130740165/xesuder.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/1/0432/3573/7755/files/79840228617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3437/7372/files/je_vous_tiens_inform_en_anglais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/4008/1829/files/oxford_picture_dictionary_second_edition_english_vietnamese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/aweli_ya_weli_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5733/9807/files/54082314238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/cracked_ios_apps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/71922635621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/buworulevawoxelaxewuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6563/9073/files/bomb_calorimetry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/21483566624.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 5

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_off0000cfac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAC 5528 bytes
SHA-256: 09b9dd8d4f824d5efe4f0a5870ca81741a1c947eee9fe65a50ebe025a533ed42
font_01_sfnt_off0000e25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25C 11800 bytes
SHA-256: 7e380c01ca2002f53ced7b70a30d210c09dec554e194144b6dc83836dd5a361e

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