Malicious PDF — malware analysis report

Static analysis result for SHA-256 104135045d7f6ba0…

MALICIOUS

PDF

41.0 KB Created: 2020-08-18 17:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c216e3fe3f4c1d85552fcd4b6a553af SHA-1: 522341a1bee719adff4702fef2dfd18e49af45b1 SHA-256: 104135045d7f6ba0628df43ec0e4b1cc45de1cb8ec1f418806166cf3d0f46556
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text suggesting a lure related to 'protaper 20/20' and includes the malicious URL. The presence of numerous PDF links, many pointing to Shopify domains, suggests an attempt to create a link farm for SEO-based phishing. The ML classifier also strongly indicated 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.cc/pify?keyword=answer+protaper+20%252F+20 In PDF document text
    • http://files.chloe-bee.com/uploads/1/3/1/0/131070894/1972206.pdfIn PDF document text
    • http://files.footballsnapbacks.com/uploads/1/3/1/4/131438439/2272731.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/1/0449/2158/5831/files/jiwefudosuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/13649305976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6268/8918/files/97826419293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/69398579811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/23427389749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/fezokudulatawawemopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4621/5584/files/lavodetarikeraxigofuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/konurapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1378/2178/files/dukegirefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8188/3030/files/vekagabezixirijukarevizi.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_off00005abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABF 5172 bytes
SHA-256: 4dd3d88334054d44f3af0e9dae830a91138c5e3dfc48977b336c988709f2c58c
font_01_sfnt_off00006c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C79 13724 bytes
SHA-256: 9bbf63a75d608b2bb099d765f2d9d5c9a180322efae99bfd5c135af6504c63a0

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