Malicious PDF — malware analysis report

Static analysis result for SHA-256 11f47d37a566273f…

MALICIOUS

PDF

43.8 KB Created: 2020-09-01 06:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f45c1dc230951ca77ad119383cedb26 SHA-1: 7c1e6ad84b50895689aba71918bc42d7b75de24b SHA-256: 11f47d37a566273f7bef74ca2e2cf2091a723bc6ebbe81ec1ba44e7ff27925d0
154 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector, ttraff.club, which is likely used to distribute further malware or phishing content. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/wix?keyword=charandas+chor+marathi+movie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6881/6544/files/9913173.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2233/files/20975470862.pdf
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/7546654947.pdf
    • https://cdn.shopify.com/s/files/1/0440/3052/5590/files/types_of_arrhythmias_ecg.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9839/files/tudujuxujenivorapoga.pdf
    • https://cdn.shopify.com/s/files/1/0432/1614/2491/files/81744651110.pdf
    • https://cdn.shopify.com/s/files/1/0465/1401/2318/files/daresifitumuxugafiliduwad.pdf
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/77446402575.pdf
    • https://cdn.shopify.com/s/files/1/0437/1320/0278/files/olive_garden_chicken_alfredo_nutrition_information.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/58538014068.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/pipedixodufubaxuluxudiz.pdf
    • https://static.usrfiles.com/ugd/b8c837_84c271c54998472f8e064733a317bc94.pdf
    • https://static.usrfiles.com/ugd/0a052f_5e600123960c40c088c11ac862878be3.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d24299663f74cb9828fc4d8b1de3ae4.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a164e274e074c4691f89bf68ad0e054.pdf
    • https://static.usrfiles.com/ugd/ba3095_4c66c8b447d045e1afb300e3d32916f3.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c83.bin
bf789f019beb7a24d085b8d5bac7db693ef699e52ba07dff41033bef8f8cce48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C83 5112 bytes
font_01_sfnt_off00007dbb.bin
f91a5b6835a6fd995f5ba5d05edae05103acad4e20e2a2b6ceaf903ad46d290c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBB 10564 bytes

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