Malicious PDF — malware analysis report

Static analysis result for SHA-256 2055e7d12984c760…

MALICIOUS

PDF

56.9 KB Created: 2020-08-20 12:49:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88f4dbb39c57a6914d4025d21683b95b SHA-1: 06b5a2be41ca66dda9f5ee42457eb3b03cb39f95 SHA-256: 2055e7d12984c7604813199cf088458b6748d15044903fb4afa6dd614b2300b0
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF redirector link pointing to ttraff.ru. Additionally, another critical heuristic detected a PDF link farm containing 28 external links, many hosted on shopify.com. The document body contains garbled text but includes the URL https://ttraff.ru/pify?keyword=new+album+song+2019++bhojpuri, suggesting a lure related to music content to entice users to click on malicious links. The primary attack pattern involves redirecting users to potentially harmful sites.

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=new+album+song+2019++bhojpuri
    • http://files.myfavoritemo.com/uploads/1/3/2/8/132815183/aa58d5e90dbb.pdf
    • http://files.mr-stevens.com/uploads/1/3/0/7/130776864/zoxakaso.pdf
    • http://fofiwo.mymodernsolutions.ca/uploads/1/3/1/4/131438500/1206732.pdf
    • http://files.prismcounselingservices.com/uploads/1/3/1/4/131438069/9059803.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/34249789322.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/mozumisuduvib.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2243/files/mathematics_standard_2_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/tisizogabulofapizalonur.pdf
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/balance_sheet_of_icici_bank.pdf
    • https://cdn.shopify.com/s/files/1/0432/1578/2045/files/jokudedisikiwukita.pdf
    • https://cdn.shopify.com/s/files/1/0440/4166/6710/files/91091498459.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/67049282897.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/fipusupokil.pdf
    • https://cdn.shopify.com/s/files/1/0434/8972/2534/files/cementing_in_oil_and_gas.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_off00009690.bin
bc154d43d92911b7d4c588c47924147b8524522a55a7e5256c3ff2db2b115a6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9690 5992 bytes
font_01_sfnt_off0000aae6.bin
07d1bf75d1e72a1a78aaa6935216b52998d4ca329680f452d03c8732f7b2702a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAE6 14332 bytes

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