Malicious PDF — malware analysis report

Static analysis result for SHA-256 745a4aff6dc40348…

MALICIOUS

PDF

57.1 KB Created: 2020-08-01 13:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb3da8a2ecf1e75c95621a21f23fa1ed SHA-1: 19f1988822e379de8ee6b0e8c8ca99d729ea2ad8 SHA-256: 745a4aff6dc403482b5c946928d48e11ddaf8a23d7532dcd10b25bec5ee94586
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.cc, which is likely used to obscure the final destination of the malicious payload. The document also features a large number of links to other PDFs hosted on Shopify, potentially for SEO manipulation or to distribute further malicious content. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful sites.

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=fairy+tail+zero+episode+2
    • http://files.makingmathmiracles.com/uploads/1/3/2/7/132710786/9520723.pdf
    • http://files.dearborn411.com/uploads/1/3/2/7/132740860/xokagilo.pdf
    • http://files.dfwfunbounce.com/uploads/1/3/1/3/131398479/1bcf7c48f6b62.pdf
    • http://files.srmsmusic.com/uploads/1/3/2/6/132695244/xedivoni_vikakuwefe_tikifelep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xikosimuzewenox.pdf
    • https://cdn.shopify.com/s/files/1/0435/7075/7791/files/62222782411.pdf
    • https://cdn.shopify.com/s/files/1/0430/4112/8601/files/beripujefaxiselunuwif.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/38061336223.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/67093729435.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/68774797603.pdf
    • https://cdn.shopify.com/s/files/1/0430/4040/7701/files/22085750657.pdf
    • https://cdn.shopify.com/s/files/1/0435/8642/0893/files/mopusoxudamij.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/ansi_asq_z1_4.pdf
    • https://cdn.shopify.com/s/files/1/0439/3759/5560/files/63501694465.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/betizamedutab.pdf
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/99774908615.pdf
    • https://cdn.shopify.com/s/files/1/0434/1891/0870/files/40246420671.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/rufigojapozefirarubeweba.pdf
    • https://cdn.shopify.com/s/files/1/0435/3081/3589/files/gujafajit.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d3e.bin
dc9708fdf7def89d9f2ab3e2ff93d8144cdca49d6e034e66cd29a9f7e3da905f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3E 16520 bytes
font_01_sfnt_off0000a2cd.bin
c6100f659516123515f1474efba25169cbe2a629cd2c1e3baa502147a8d823de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2CD 5192 bytes
font_02_sfnt_off0000b498.bin
13f8f8b54c55c3f268ae77ae7686a21289cca7983ae64cbc8535c523af2d7b36		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB498 10048 bytes

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