Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c4bf8a6581671c…

MALICIOUS

PDF

48.8 KB Created: 2020-08-20 06:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5bdcc2c0db2720d451d5ab22b0e1ed5 SHA-1: 988b0c24b6e05a7e541512ec9a557a6128efd72b SHA-256: 02c4bf8a6581671ce1c267c0af4d6344b7577ddda532ae66b530556b8ffd05f5
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to further malicious content. The document body, though obfuscated, contains the same URL and appears to be a lure related to a game guide. The presence of numerous other PDF links suggests a link farm intended to distribute malicious content or manipulate search engine results.

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.cc/pify?keyword=mhw+tempered+kushala+daora+guide
    • http://farevun.terangajuice.com/uploads/1/3/1/1/131164250/vosiwumeb.pdf
    • http://bakap.georgiaaglaborforum.com/uploads/1/3/0/8/130814575/lunevomodirumof.pdf
    • http://files.lovelaughterandreallife.com/uploads/1/3/1/0/131070619/b9e64b99a38a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0937/5383/files/79984380542.pdf
    • https://cdn.shopify.com/s/files/1/0434/5489/0149/files/cfmoto_650_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/fijolukogazejojavogabuwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4826/files/67639804475.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/luluvirepegamarepiganedek.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/napopanoxixukow.pdf
    • https://cdn.shopify.com/s/files/1/0432/1155/4980/files/botunosolenesoguma.pdf
    • https://cdn.shopify.com/s/files/1/0428/7122/6534/files/blackjack_java_code.pdf
    • https://cdn.shopify.com/s/files/1/0434/8280/8472/files/brio_tuscan_grille_menu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7952/3751/files/38472884676.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexivopagutufaxusezonav.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7308/files/5_reasons_why_school_uniforms_are_bad.pdf
    • https://cdn.shopify.com/s/files/1/0433/3492/6495/files/46232047495.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/41407933520.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/52488207336.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b58.bin
153d857da03fb7c710ac129a41751dd5e727f481e315095a0939577941fe3754		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B58 5532 bytes
font_01_sfnt_off00007e1c.bin
fa8ab88124d897b28149a975cab6b2e4b9a52596006e6abbaf7387f828854171		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1C 10008 bytes
font_02_sfnt_off0000a09e.bin
79deff835521e745cd339e2bcd06d36e11083d895b035e497f0381aa9930514c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA09E 16160 bytes

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