Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec50b0b8d21674aa…

MALICIOUS

PDF

43.9 KB Created: 2020-08-26 22:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab8189d086a66fa953aee615e8a2998d SHA-1: a40f514355276fe2a32a0d68c6d3971846355b26 SHA-256: ec50b0b8d21674aa4d690621938879dea39d0219968f00b5e0f4b399b13a7a85
140 Risk Score

Malware Insights

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

The PDF contains a lure instructing the user to enable macros or editing, a common technique to bypass security. It also hosts a mass external PDF link farm, with the primary link directing to a known malicious redirector. The document body contains the URL that leads to the malicious redirector, suggesting the primary intent is to redirect the user to malicious content.

Heuristics 4

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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.com/pify?keyword=adobe+acrobat+reader+dc+keeps+crashing+windows+7
    • http://files.ynvuclothing.com/uploads/1/3/2/8/132814276/148183.pdf
    • http://files.mrknifeguy.ca/uploads/1/3/1/1/131164152/vasum.pdf
    • https://cdn.shopify.com/s/files/1/0433/3197/7370/files/dolasofonefefa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/gebupalurededekar.pdf
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/26950138968.pdf
    • https://cdn.shopify.com/s/files/1/0432/9573/5976/files/adjetivos_posesivos_en_espaol_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0435/1341/3791/files/wobijuxirijulotojuxavo.pdf
    • https://cdn.shopify.com/s/files/1/0457/4923/9964/files/new_food_guide_pyramid_2019.pdf
    • https://cdn.shopify.com/s/files/1/0433/9856/1957/files/witolakifamon.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6050/files/ataxia_espinocerebelosa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/lenixuxijuvowunemer.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_off00005e39.bin
0c82296e885199f86b664f09cecce78d5e56f769695ce4cc1c186253bf1294f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E39 5456 bytes
font_01_sfnt_off000070cd.bin
93738fd46e20fd831a396e4a49aa022c2ed7629d4aee0a8f92f1c8ec13f5c9ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70CD 10296 bytes
font_02_sfnt_off00009401.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9401 4324 bytes

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