Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8cb9899e5265766…

MALICIOUS

PDF

42.8 KB Created: 2020-08-06 21:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 875a12a8a770fce1ff510cb1660d51b7 SHA-1: 6b8d7ecce432e1d770debcb6600e5471c4866f27 SHA-256: e8cb9899e526576687c6208216c963a604c7792434c3a997fd91ebdc1371a0c1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many of which point to a link farm designed to obscure the ultimate destination. One of these links, https://ttraff.cc/pify?keyword=company+profile+pdf+interior, is a known malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the intent is to trick the user into clicking the malicious link under the guise of viewing a company profile.

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.cc/pify?keyword=company+profile+pdf+interior In PDF document text
    • http://files.prairiefix.com/uploads/1/3/1/0/131070356/4174338.pdfIn PDF document text
    • http://files.kikoriapp.com/uploads/1/3/1/6/131606346/netiz.pdfIn PDF document text
    • http://files.amfccl.com/uploads/1/3/1/4/131408798/valudokamalivas-vubufowaxaru.pdfIn PDF document text
    • http://files.togetherincounselling.co.uk/uploads/1/3/0/8/130813095/254556af50a38b.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/1/0427/7328/2983/files/the_spinners_discography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/38597919685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3543/4901/files/17518960119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/48400900105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/99493408688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4024/9755/files/32299907445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4316/8156/files/captivating_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/4181021188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/76809389521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/refixiv.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 6

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_off00006a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A92 5016 bytes
SHA-256: 611ca2aa5b4ab695492002f58bebf8665e746617c8814d95ef8c29cdc1704315
font_01_sfnt_off00007b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B93 10192 bytes
SHA-256: 67b2743e049d940d67bfad34a3fcac0cf972324fe6687f94c06e7c1a7e5b6b61

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