Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5e4f309a31d0c19…

MALICIOUS

PDF

39.6 KB Created: 2020-08-26 01:13:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 919a64055141bc161188559c037bc3a3 SHA-1: d79121f4d5095e782b0f99477c8a5feb97972049 SHA-256: a5e4f309a31d0c1922b07cbfa3deba621a49159df108882788d55cce82d14a84
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack vector appears to be social engineering through a deceptive link, leading to potentially malicious 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.ru/pify?keyword=miller+bobcat+225g+plus+fuel+pump
    • http://fadan.projectnohunger.org/uploads/1/3/1/1/131164250/2213426.pdf
    • http://files.scintillation.org/uploads/1/3/1/4/131406558/wetetaludomebixuxeka.pdf
    • http://sodad.jenniferleareynolds.com/uploads/1/3/1/4/131409090/f4cba26.pdf
    • http://files.capturingmomentsblog.com/uploads/1/3/0/7/130740464/xelomatawa.pdf
    • http://files.otwayanglicans.com/uploads/1/3/0/7/130775744/sapavasarazogelik.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/39948766658.pdf
    • https://cdn.shopify.com/s/files/1/0437/1087/3750/files/cancer_research_uk_statistics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lonuxifipepi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8922/3066/files/best_video_recorder_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0437/6585/8455/files/21621991419.pdf
    • https://cdn.shopify.com/s/files/1/0430/4797/7114/files/biology_class_11_ncert_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/gazadig.pdf
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/4207399707.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/28308772468.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/segavobowilitufokako.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_off000058cf.bin
34b8a13caa8ee6cf0a24bf6430eea919517b7762ceae88cb5d0713ab6771b7d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58CF 5736 bytes
font_01_sfnt_off00006c40.bin
5512f6a7ef6c0aae0861c38cfa81a27cb23cddb4ea7d531df849baa011326d52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C40 10944 bytes

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