Malicious PDF — malware analysis report

Static analysis result for SHA-256 a22f0f2939f872ac…

MALICIOUS

PDF

61.0 KB Created: 2020-08-09 22:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bb564bbc9732370334d15bf63479fd8 SHA-1: 7f768c6f84b9a31cd1ef3315dc66524ac2eeb488 SHA-256: a22f0f2939f872acade2ec0f1b80037b2246858230e730383f47174e3e117481
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be related to 'vertical integration and horizontal integration', likely a lure. The primary heuristic indicates the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=vertical+integration+and+horizontal+integration+pdf'. This suggests the document's purpose is to redirect the user to a malicious site.

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=vertical+integration+and+horizontal+integration+pdf
    • http://files.pinkturtledesigns.co.uk/uploads/1/3/1/8/131857758/cf6621.pdf
    • http://files.wbcslions.org/uploads/1/3/0/7/130739916/871336.pdf
    • http://files.misophoniablog.com/uploads/1/3/1/4/131406717/a4eae365247cf.pdf
    • http://files.zebradental.co.uk/uploads/1/3/0/8/130874213/wiwazomamelizukidan.pdf
    • https://cdn.shopify.com/s/files/1/0436/9547/2794/files/cultura_regional.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/north_carolina_notary_public_manual_2016.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/auckland_city_map.pdf
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/55432286340.pdf
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/anestesia_geral_veterinaria.pdf
    • https://cdn.shopify.com/s/files/1/0432/0880/2466/files/62597899628.pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/62904550226.pdf
    • https://cdn.shopify.com/s/files/1/0431/4857/4884/files/82688720086.pdf
    • https://cdn.shopify.com/s/files/1/0431/8229/3141/files/dijupazotufut.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8372/files/26818854201.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/mezoxapuzal.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/migo_mixtape_download.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_off0000b062.bin
987e27a13677a63697da5340f6de97be4349d349a8af2bc65f266c21f82459fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB062 5256 bytes
font_01_sfnt_off0000c247.bin
2aab61f29a5b1db95c6f84dbe33171b7d40f6e77060137dc1fb7c7f9e458318c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC247 10636 bytes

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