Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e3f6f78e95a3b40…

MALICIOUS

PDF

59.2 KB Created: 2020-07-25 11:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 729e87a5dfdb647478f6b1f48461b1e4 SHA-1: 15de4ee6afe5abf864fc10cfc022dfefa6bc10ab SHA-256: 1e3f6f78e95a3b404381613210349c41073a50ee19df9ad84b2935fab00422aa
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links directs to 'ttraff.cc', a known malicious redirector. The document body, though heavily obfuscated, contains text related to sheet music, suggesting a lure to disguise the malicious intent. The presence of a link farm and a malicious redirector indicates an attempt to lead users to harmful content.

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.cc/pify?keyword=gute+nacht+winterreise+sheet+music
    • http://files.ratiocoffee.ca/uploads/1/3/1/6/131606453/62d13aae3.pdf
    • http://files.abckidstherapy.com/uploads/1/3/2/7/132740584/dizoluraded-nomazafojitin.pdf
    • http://files.promoteteaching.com/uploads/1/3/1/4/131453045/wulimurivofuf.pdf
    • http://files.evildragonfiretheater.com/uploads/1/3/0/9/130969424/967e30b25163c.pdf
    • https://cdn.shopify.com/s/files/1/0433/4954/1017/files/16936189556.pdf
    • https://cdn.shopify.com/s/files/1/0431/4346/3069/files/32766385315.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/nurudumumajuwusefovurer.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/jetivugavas.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/40341352770.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/vutugunuxudaguru.pdf
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/95624399593.pdf
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/jelumujenezufujoxeguluk.pdf
    • https://cdn.shopify.com/s/files/1/0439/5122/7048/files/54291037084.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/80350795523.pdf
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/pisaziweza.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/73343819452.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072fe.bin
089be3d942f04332e09d91c4656245d0bca3f983d892eb0a93ea157157ba01a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72FE 4404 bytes
font_01_sfnt_off000082f2.bin
e8c633c2f85588d1178574385c29549646ea9745ff8f025625a619adfe25d7e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82F2 4900 bytes
font_02_sfnt_off0000937d.bin
8bcd30c48d5def8fe8a1dc00b3fe80fb61baddcd104c51560bc066edda499b76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x937D 16192 bytes
font_03_sfnt_off0000c59d.bin
def8ebac5667650bca5ae62b27e01e93bc4887d17c0413c53be76dce30d32684		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC59D 17284 bytes

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