Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f6b75644a1dbcc…

MALICIOUS

PDF

40.9 KB Created: 2020-08-22 15:39:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d816260577e47072d9447aef3835eb4 SHA-1: ef5b02b77494683e0402b48712d20dfc6c43c59c SHA-256: e7f6b75644a1dbcc95f7cc01082b15305724eedcc587e77f495edadaef40c882
120 Risk Score

Malware Insights

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

The PDF file contains a lure document disguised as an investment term sheet, which is a common social engineering tactic. It embeds multiple links, one of which, 'https://ttraff.ru/pify?keyword=minority+equity+investment+term+sheet', is identified as a malicious redirector. The presence of numerous external PDF links suggests a link farm used for SEO poisoning or to obscure the true malicious destination. No scripts were extracted, but the primary attack vector appears to be directing users to malicious infrastructure via embedded links.

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=minority+equity+investment+term+sheet
    • http://xogiw.fullcontactrunner.com/uploads/1/3/0/9/130969953/1212274.pdf
    • http://jajasex.stacierossow.com/uploads/1/3/1/4/131406676/1f414f04dc.pdf
    • http://files.dmaig.org/uploads/1/3/0/7/130739835/silumebopixujimegopa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/94517412599.pdf
    • https://cdn.shopify.com/s/files/1/0428/9167/3763/files/kixuxatetumir.pdf
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/tombow_dual_brush_pen_lettering_practice_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/stihl_026.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/bmjv_vorsorgevollmacht.pdf
    • https://cdn.shopify.com/s/files/1/0439/1151/2232/files/97244827074.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/talimujefudujovejotob.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/97573205428.pdf
    • https://cdn.shopify.com/s/files/1/0431/1056/3994/files/waste_biorefinery_potential_and_perspectives.pdf
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/calendario_365._es_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/2124/6370/files/balance_general_en_ingles.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_off000062c1.bin
27864de7e160e5fa6f1f26fc1f0e9c8e63b94c18c0e6a39ba8dfc824567d671e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C1 4976 bytes
font_01_sfnt_off00007399.bin
96709ee9eb9ac2249d382f3403180c48646b114438acd3f2be76d2d3a5486b31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7399 10364 bytes

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