Malicious PDF — malware analysis report

Static analysis result for SHA-256 023f48f6aaa63a9b…

MALICIOUS

PDF

41.7 KB Created: 2020-08-02 22:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1637d489c8e0e60e5eb5028e279e77be SHA-1: a8d96fa292f1cc0e1c88009675f7018cec49816f SHA-256: 023f48f6aaa63a9bad161c158b0509003f690f0856d066252fa676d1277d6713
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, https://ttraff.ru/pify?keyword=witcher+3+succubus+decoction, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm or phishing attempt. The ML classifier strongly indicates maliciousness.

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=witcher+3+succubus+decoction In PDF document text
    • http://files.jingergustafson.com/uploads/1/3/1/4/131453402/7719565.pdfIn PDF document text
    • http://files.lauraduggantherapy.com/uploads/1/3/2/6/132683181/zakesanulop.pdfIn PDF document text
    • http://files.tue-wai.com/uploads/1/3/0/7/130739239/wivigawamanaro.pdfIn PDF document text
    • http://files.paulfield.com/uploads/1/3/0/9/130969905/6573293.pdfIn PDF document text
    • http://files.marinersguide.info/uploads/1/3/0/7/130775959/178d2ae253d9.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/1/0438/1786/1277/files/22218114886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/5_day_notice_cook_county_illinois.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1305/3338/files/discord_bump_bot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/nordictrack_audiostrider_800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/92743398153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0205/2257/files/fodin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/dejidonotezabarirebufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8790/5446/files/sosox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/98598580071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/rumumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/nejakip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/xadowokorapowimamapalagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/loxoginutojutig.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_off0000668f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668F 5100 bytes
SHA-256: 3765d94cd3065c214e73d2fd6fe28db331f72e0bf4e3ece3283e50f1763b31fc
font_01_sfnt_off000077ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EE 9984 bytes
SHA-256: 4a6acef138eb4228cdde8246a64dc3075e4483b44928065fcec45e685c49ebb3

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