Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b85d8cdbfed6973…

MALICIOUS

PDF

38.5 KB Created: 2020-08-22 02:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b94220196e01382edf76c865b44f68d SHA-1: a00bd41c4d7aae5ecde4d0f8071fbb3e99de054b SHA-256: 8b85d8cdbfed6973217aebec34f5728e268f191993461fd6a9cda274d49cebe6
128 Risk Score

Malware Insights

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

The PDF contains a link to a redirector hosted at 'ttraff.cc' which is flagged as malicious. The document body and embedded links suggest a lure related to an Equifax dispute form, likely intended to entice users to click the malicious URL. The presence of multiple Shopify-hosted PDF links, while mostly benign, contributes to a link farm pattern. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=equifax+dispute+form+uk
    • http://files.bollr.com.my/uploads/1/3/2/7/132740836/6cfeedfbaa.pdf
    • http://files.thecentennialhotel.com/uploads/1/3/1/4/131438071/lokefuzexujisezojov.pdf
    • http://riwalir.okmissionhall.net/uploads/1/3/2/6/132681504/8020842.pdf
    • https://cdn.shopify.com/s/files/1/0447/8897/3729/files/expense_list_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/vapefonefodekalepiwewin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vofekofunore.pdf
    • https://cdn.shopify.com/s/files/1/0435/3281/2439/files/vocabulary_words_for_ssc.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/metovivagajibu.pdf
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/23870355901.pdf
    • https://cdn.shopify.com/s/files/1/0435/8973/0472/files/xavuwifezupejubadu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/70109110667.pdf
    • https://cdn.shopify.com/s/files/1/0431/8593/0402/files/beiimaan_love_video_songs_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4840/files/bleacher_report_college_football_week_7_predictions.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000582f.bin
7daf945238f5d3fc062730550ff179f47ee6fa4844109580cd045ad632d83de4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x582F 5372 bytes
font_01_sfnt_off00006a6d.bin
a45339d583af851c34f6407d70ca106668fa720905e5b62ed92cdb31cbdbfc29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6D 10432 bytes

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