Malicious PDF — malware analysis report

Static analysis result for SHA-256 617cd6490448664a…

MALICIOUS

PDF

56.5 KB Created: 2020-08-06 05:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe6b18bf908336aa576954e7a145e5c5 SHA-1: 40d812c3aac43726d322c530715a9a04d85d66bc SHA-256: 617cd6490448664aea08b5bc344eaec95e290a9a37d465a6c22090706a8d29c8
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, likely for SEO manipulation or to host further malicious content.

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=ielts+academic+writing+task+2+template+pdf In PDF document text
    • http://files.professionaladvancements.com/uploads/1/3/1/4/131406226/7628409.pdfIn PDF document text
    • http://files.lifehealingsolutions.com/uploads/1/3/2/6/132681901/2532004.pdfIn PDF document text
    • http://files.crackpotpodcast.com/uploads/1/3/2/6/132683181/b313de196.pdfIn PDF document text
    • http://files.cardiffpilatesstudio.co.uk/uploads/1/3/2/6/132682210/kodapi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9975/8498/files/companion_to_applied_mathematics_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0209/9873/files/piletetimabos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9284/4448/files/zuxelinuwipinexakuxida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/wudexobole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8816/files/wivum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/game_of_thrones_season_4_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/xelugidatexix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/beasttrollmc_osu_skin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45560821546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3944/0543/files/32560738689.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA8 5380 bytes
SHA-256: c8cfa3d4114cfee590534e1e0d8d736caa0773bf6921db2989a823db60ef718f
font_01_sfnt_off0000a0ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0EC 11372 bytes
SHA-256: 1ab25be0453726842f364866abc7f52c594547c08f624aa7e30d3055e383ad06
font_02_sfnt_off0000c620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC620 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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