Malicious PDF — malware analysis report

Static analysis result for SHA-256 b197210539d21b80…

MALICIOUS

PDF

39.4 KB Created: 2020-08-19 20:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68e21527cb9912c89db83ade032b5b2d SHA-1: cd85dd4a48f4f54d4e3d296ff5ec8210d83fe42e SHA-256: b197210539d21b8054c820241bc0cb5bf7160891a7bcd0c90478c52b8a1824fb
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=data+comparison+between+two+excel+sheets
    • http://files.salvatoremallimopiano.org/uploads/1/3/0/7/130775810/palalovevalu.pdf
    • http://files.jsihomeinspections.com/uploads/1/3/1/8/131856234/jogixag.pdf
    • http://files.nanlifinance.org/uploads/1/3/1/4/131438193/2007380.pdf
    • http://somob.hvcresearch.com/uploads/1/3/1/8/131856214/5710125.pdf
    • http://files.lingg.us/uploads/1/3/1/0/131070161/8f9f7cddd5ba9e.pdf
    • https://cdn.shopify.com/s/files/1/0433/7831/1326/files/90481027450.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/86678490621.pdf
    • https://cdn.shopify.com/s/files/1/0430/8434/9591/files/les_infortunes_de_la_belle_au_bois_dormant_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0448/2777/1040/files/tuxogiromeditafamizatevir.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/4204516674.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wawufomujemozinabewa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/21206394190.pdf
    • https://cdn.shopify.com/s/files/1/0437/1320/0282/files/initialize_an_arraylist_java.pdf
    • https://cdn.shopify.com/s/files/1/0428/6427/9718/files/fugevodudeto.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6939/files/naraligu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/cheggs_return_label.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_off00005c6b.bin
5907c46808ccc27274dbde52380055353b850427aefbb9645ed7779ccb6e5c61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6B 5472 bytes
font_01_sfnt_off00006eee.bin
2532d0cb5d0ec207451425ddfab330c115e1a3373fd13a35e5290bb94fec9cfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEE 9828 bytes

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