Malicious PDF — malware analysis report

Static analysis result for SHA-256 6671e5d078ea8af5…

MALICIOUS

PDF

34.0 KB Created: 2020-08-04 09:55:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 35cd16f592309c275b23e5040649a0e2 SHA-1: 72bba4c05b4cf84a6d7b70a9201c5f0f025bad41 SHA-256: 6671e5d078ea8af5ab347582c40b7cab84bf28c7c426cf2e7f75f3ad10821559
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to a link farm. The embedded URLs, particularly the one pointing to 'ttraff.cc', are flagged as malicious redirectors. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF links, suggesting a lure for free downloads that ultimately leads to malicious infrastructure.

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=envision+math+grade+2+topic+1+pdf In PDF document text
    • http://files.battlegrounddance.com/uploads/1/3/1/4/131407796/xujoxunoromosupu.pdfIn PDF document text
    • http://files.charlemay.com/uploads/1/3/1/4/131407668/e4e6745833ad.pdfIn PDF document text
    • http://files.casualcorvettescsra.com/uploads/1/3/1/8/131857304/7549186.pdfIn PDF document text
    • http://files.yourbesthealthbyfriday.com/uploads/1/3/1/4/131453193/kepig_dalixe_wopupozonalem_todugomere.pdfIn PDF document text
    • http://files.omgyummy.com.au/uploads/1/3/0/7/130775268/8520325.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/1/0432/9318/0070/files/alternaria_tenuissima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7134/0698/files/favonikafokirukuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2344/5666/files/search_engine_marketing_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/pumakij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/california_eviction_defense_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6568/8743/files/bipet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0560/7079/files/gixulukivupunatexosemav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/72715282765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/womixaxeferez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5542/3396/files/mumesogomuzetegebufer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/fajuxogetozideruwazun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/wozoroligawomopokis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/m1_garand_disassembly.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47BB 5736 bytes
SHA-256: 4b75eed7dd4df9053cfafecd4d6ce30d08dad4a449abff8a57955a641624ac47
font_01_sfnt_off00005b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B30 9328 bytes
SHA-256: 220e5af3368d8d61f67fa399bda0d2240e3cccab3fcefb0b5169096354a1e964