Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd55c09e6f56d579…

MALICIOUS

PDF

42.6 KB Created: 2020-08-10 11:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6399d36202db8d006458777a06ddd77c SHA-1: 3da9fffd5d88345d255fd0f973425f8d421b58a6 SHA-256: cd55c09e6f56d579f52fc0f448cba4e32ad434125172599cbcb14c94dcda65f8
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=bangla+quran+meaning+pdf, which is likely used to redirect the user to a malicious site. The document body text, though heavily obfuscated, contains references to the redirector URL and other PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute malicious content.

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.com/pify?keyword=bangla+quran+meaning+pdf In PDF document text
    • http://vusugivix.pleasantviewumc-abingdon.com/uploads/1/3/1/3/131383664/jovifugedabuvivada.pdfIn PDF document text
    • http://files.livingwithachoice.com/uploads/1/3/1/3/131378990/5801802.pdfIn PDF document text
    • http://files.moovartfrance.com/uploads/1/3/0/7/130775257/b149988e6b42.pdfIn PDF document text
    • http://files.glamorgananimalclinic.com/uploads/1/3/1/4/131438216/2a13dabe.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/1/0439/0040/3880/files/28582194538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6310/0070/files/wufof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1507/7022/files/janitrol_furnace_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9512/9254/files/lanafexokomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4007/7981/files/76352379340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/zizutuzulewepaniwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5757/0207/files/vistaprint_business_cards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8351/4527/files/39749237652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/didul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/niborojinumaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5397/9550/files/45624883395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/4th_grade_staar_math_practice.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000823f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x823F 17448 bytes
SHA-256: cd6d79593b6ee8cfdf8dde3f5d1e75bc146b731f1d5279be635c0e3b360e7de8
font_00_sfnt_off00004e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E9D 5356 bytes
SHA-256: 6d4f2c44c0ce84d72fe91a8f254c72865dc629ae56ad26d9b697c8e50519fb0f
font_01_sfnt_off000060b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B6 9760 bytes
SHA-256: 4d849b1afa01e5c863086d3954bdbf27c01a21372824d8f44b054bcb5bf0db05