Malicious PDF — malware analysis report

Static analysis result for SHA-256 f071c1de020acac8…

MALICIOUS

PDF

40.4 KB Created: 2020-08-12 05:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42fae792463a2ae62dc8f56b4cf3a560 SHA-1: b8a4de33b72ea2747bfc70edc7e58ca89391bb32 SHA-256: f071c1de020acac8f70ea697c977ba342b9247561b2eccc32943c2d0db2840de
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, the PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger scheme to generate traffic. The embedded URL https://ttraff.ru/wb?keyword=revolve%20810%20g2%20service%20manual is identified as a malicious redirector, likely used to lead the user to a phishing or malware-hosting site. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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.ru/wb?keyword=revolve%20810%20g2%20service%20manual
    • http://files.homespirit.shop/uploads/1/3/1/4/131482916/puwulomu.pdf
    • http://files.speech4kidz.com/uploads/1/3/2/7/132740628/126412.pdf
    • http://files.rhosarts.com/uploads/1/3/2/6/132695372/kuxuga_baliwevavavawiw.pdf
    • http://files.michellewiebe.com/uploads/1/3/0/7/130739601/2245093.pdf
    • http://xadokuxox.declaringzioninternational.org/uploads/1/3/1/8/131856919/db9c75d.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/poe_ninja_currency.pdf
    • https://cdn.shopify.com/s/files/1/0437/9007/4005/files/wukegigazowebalotowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51031200676.pdf
    • https://cdn.shopify.com/s/files/1/0435/0889/1807/files/welilodafogusomebadov.pdf
    • https://cdn.shopify.com/s/files/1/0429/1349/7247/files/assessment_of_learning.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/blade_and_soul_armors.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7494/files/html_unordered_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/2076/2783/files/11562021774.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6680/files/30931646435.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_off00005e76.bin
33a37ac7d6d8968f99ea2b7cfde8f3cbafb4765b8f4041d818730c767052f4b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E76 5708 bytes
font_01_sfnt_off000071cc.bin
1fc7a77316898da2641268e4f2a2fd67dba15a9cecd68eb46795c93e613d016c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71CC 10452 bytes

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