Malicious PDF — malware analysis report

Static analysis result for SHA-256 03dc8c6097867176…

MALICIOUS

PDF

40.6 KB Created: 2020-08-23 08:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acaf46c43d8f0a6ff67ef867e0176319 SHA-1: f09283f09bbf10df9623d4932bb33b4f3e7b2ac4 SHA-256: 03dc8c60978671769850b0123d81cc4a46ce5154f4ae8c85229e735d875820e9
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'ttraff.com' domain. The document body, though partially corrupted, suggests a lure related to an 'examiner report'. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm strategy to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=examiner+report+acca+p5
    • http://files.onyxfuneralplanning.com/uploads/1/3/1/3/131380413/pofadajigivep.pdf
    • http://files.computerscpr.com/uploads/1/3/2/7/132740860/xubujolodosetejokuv.pdf
    • http://files.llechrwd.co.uk/uploads/1/3/1/0/131071067/josiwopigewegi.pdf
    • http://files.dualworldconsulting.net/uploads/1/3/2/6/132695546/judolobasaki-zitefelafopiv-fokewuludotub-mutelojetazoka.pdf
    • http://sozedu.dietislab.org/uploads/1/3/1/4/131437119/3644077.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6343/4654/files/human_anatomy_and_physiology_coloring_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/bordereau_de_remise_de_chque_lcl.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75901524911.pdf
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/3d_consortium.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/doludevixebomo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1955/9335/files/87734984381.pdf
    • https://cdn.shopify.com/s/files/1/0435/1324/9946/files/xavisupomivodomuzelixom.pdf
    • https://cdn.shopify.com/s/files/1/0435/1298/7802/files/24127235953.pdf
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/bolupamesaduxanunigan.pdf
    • https://cdn.shopify.com/s/files/1/0433/7536/2198/files/risopoxorizinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3335/3627/files/42895251564.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_off000061c7.bin
3f725472de589cb8ec8a3f22fe350b4829d72783e23b13ab8621fdb99489751c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C7 5016 bytes
font_01_sfnt_off000072c2.bin
1c90fc60c8418271cf9d73d02dde83cf7af8c165bc8a22908611e8b3aec0b177		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C2 10192 bytes

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