Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2bd5153f6d91564…

MALICIOUS

PDF

40.4 KB Created: 2020-08-16 20:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe0e74b2bd0412af24e3abb55ff32b4d SHA-1: 05070473d9dbaadcd1d27236e5be55e5172ee958 SHA-256: e2bd5153f6d91564998757cde8f25eb7c64e95bf167f6f7c461f2acf68a6ef35
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is presented in the document body as 'guitar songs music sheets'. This suggests the document is designed to trick users into visiting malicious sites under the guise of providing music-related content. No scripts were extracted from this sample.

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=guitar+songs+music+sheets
    • http://mires.christineleecounselling.com/uploads/1/3/0/8/130874330/b80ce5d3c71da5.pdf
    • http://dogegapib.teamcure.org/uploads/1/3/1/1/131163953/2305566.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4466/files/8980177671.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17844710077.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/lixejuxoru.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1792/files/private_bank_job_question_in_bangladesh.pdf
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/74636211402.pdf
    • https://cdn.shopify.com/s/files/1/0435/6400/7583/files/97857353415.pdf
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/center_parcs_whinfell_forest_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/6137/9226/files/fitenorozixivilisefugujav.pdf
    • https://cdn.shopify.com/s/files/1/0439/6810/2558/files/find_shares_outstanding_on_balance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/53513310079.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/93409350935.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/96945409154.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/64508916945.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tagesagebog.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_off00006028.bin
c2b537632888a1d5663fafae50bea88f853b6d0e277acda4b17994140ac15599		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6028 5212 bytes
font_01_sfnt_off000071b3.bin
cbd8b897ba9724471e0ee5c276a3a711a0287d3f3952899db7b1c0e0a85e28e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B3 10192 bytes

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