Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca977332c28238f…

MALICIOUS

PDF

43.6 KB Created: 2020-08-19 05:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b16c9eca0dfdc917de4d09597062eed SHA-1: 298671ae4a155de25d581b1108f847d64e79cd5b SHA-256: 9ca977332c28238fc7cd913afe6ae8a0cbbe3a0c2c794dbf6fb8564ed00611b1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, while appearing academic, contains a URL that leads to this redirector. The presence of a link farm and a malicious redirector suggests an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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=crystallography+of+martensite+transformations+in+steels
    • http://files.southforkvoice.com/uploads/1/3/2/6/132682868/zagazazaligewi-kilinorolisot.pdf
    • http://files.hsccmilwaukee.com/uploads/1/3/0/8/130813715/kapafoxunesozuf.pdf
    • http://files.kathrynrobertson.co.nz/uploads/1/3/1/4/131453651/1049ac4a99a9.pdf
    • http://files.woodlandsparkbaltimore.com/uploads/1/3/0/7/130740517/1370510.pdf
    • http://kavup.wkelearning.com/uploads/1/3/1/6/131636725/a6d1bfa9.pdf
    • https://cdn.shopify.com/s/files/1/0433/5760/1943/files/43080258988.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/8502839077.pdf
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/gunivaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/8218/6905/files/god_of_war_movie_in_tamilrockers.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/nekixugo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/47692737462.pdf
    • https://cdn.shopify.com/s/files/1/0448/0499/7271/files/14450614197.pdf
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/daleb.pdf
    • https://cdn.shopify.com/s/files/1/0431/4031/7335/files/fewoxorimefiwiverefizu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/69040393223.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f0a.bin
64c2064e9d9275129895460d7d4ef7356afa48d507d979385da30d2846a0fbef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0A 5228 bytes
font_01_sfnt_off000070b2.bin
210817e64b3128af0d2f3f437540ddd24d5f152e4c0d90e17294cca53512d40d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B2 9992 bytes
font_02_sfnt_off000092e5.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92E5 4324 bytes

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