Malicious PDF — malware analysis report

Static analysis result for SHA-256 38afaab1b49dede2…

MALICIOUS

PDF

41.9 KB Created: 2020-07-27 05:01:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff903b58637bcd21f1f55f0f0f8c5bab SHA-1: 2ac8f96507328437469cde915529b00fbd46c664 SHA-256: 38afaab1b49dede2870593813ddefca2dd215a18f43fbc64fe40a4da758d31b5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'Mandatory report saskatchewan income supplements', suggesting a lure. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or manipulate search engine results.

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/pify?keyword=mandatory+report+saskatchewan+income+supplements
    • http://files.badluckcomic.com/uploads/1/3/1/4/131456012/8607738.pdf
    • http://files.hbcnow.org/uploads/1/3/0/7/130739099/vixipedofunitedifilo.pdf
    • http://files.sablecatalchemy.com/uploads/1/3/2/6/132682820/zejixaga_nerakerelutipe_polifep.pdf
    • http://files.hbcnow.org/uploads/1/3/0/7/130739099/vixipedo
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/74296257766.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73807437975.pdf
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/nikidakowalivafavuxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7996/6628/files/89110771834.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/25249102453.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/tubewebidirutiwiled.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/74051545672.pdf
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/7616250730.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruketisoren.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.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_off000062cd.bin
0b952e20bbc01abaf2268448e62bb527e9e4ff3deaae2409f32612cc4b7238f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62CD 5456 bytes
font_01_sfnt_off00007548.bin
0cad811616228012eb49fbf4b45d4b99c5d781bfc7ae9181df48325631b82737		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7548 10648 bytes

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