Malicious PDF — malware analysis report

Static analysis result for SHA-256 b64cb73012e52868…

MALICIOUS

PDF

46.6 KB Created: 2020-08-15 04:25:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcee11041a045b83ef3716e0e4bc282f SHA-1: 90ee48254f19854b9ace75656bb22707e4200810 SHA-256: b64cb73012e52868123e54d99c6117bef6ac37d8a81dee655f112edcbfb9b596
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=caroline+hirons+skincare+cheat+sheet'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to benign Shopify URLs but are likely used to mask the malicious redirector. The ML classifier also strongly flagged this PDF as malicious. 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=caroline+hirons+skincare+cheat+sheet In PDF document text
    • http://files.carecounselinglv.com/uploads/1/3/1/3/131379054/larinugedi.pdfIn PDF document text
    • http://files.birthservicesbykristin.com/uploads/1/3/1/6/131607095/8104581.pdfIn PDF document text
    • http://lasososos.kirkistownprimaryschool.com/uploads/1/3/2/8/132814930/4705090.pdfIn PDF document text
    • http://files.chubli.net/uploads/1/3/0/7/130776031/3044415.pdfIn PDF document text
    • http://files.cliffgloverpottery.com/uploads/1/3/0/7/130775838/tudev.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/1/0427/8334/2748/files/jiruxetowuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1769/7437/files/75524342694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3055/6320/files/wanugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/52445228540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0274/9347/files/campbell_biology_11th_edition_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/badshah_movie_mkv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/davekudaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0223/8875/files/fatty_acid_derivatives.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/giwebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/autoformation_en_anglais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5591/4908/files/56366392522.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000712a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712A 4856 bytes
SHA-256: 47b76fc337d71733d959111d5a8422e5d8938dd2ac4d66313ed2210e38c4a4e9
font_01_sfnt_off00008196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8196 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00008a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A24 10120 bytes
SHA-256: f39dc4ef0bde47768aceea49d9acacbc3791701ccc4bbb59690d4a6dc83c1ac4

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