Malicious PDF — malware analysis report

Static analysis result for SHA-256 8655a0720c7640fe…

MALICIOUS

PDF

41.2 KB Created: 2020-08-18 20:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5069bc12ea981308f8c01f2c72265c65 SHA-1: d7ed2248d18a33fa2e76893c328c7e0ddcbf0c40 SHA-256: 8655a0720c7640fe59fa00c0cc2eeac571d2843f39b8257f49afb22e24b59c5f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=happy+pongal+images+in+tamil'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0437/8565/0325/files/bioethics_in_canada_weijer.pdf'. The document body, though partially corrupted, also contains these URLs, suggesting a social engineering attempt to direct users to malicious infrastructure.

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=happy+pongal+images+in+tamil
    • http://soramif.stcatherineschurchlittlehampton.org/uploads/1/3/1/3/131383645/1196933.pdf
    • http://files.lazyacrescampground.net/uploads/1/3/0/7/130775195/7284154.pdf
    • http://files.ottawaherefords.ca/uploads/1/3/0/7/130775704/nukez.pdf
    • http://files.lahabrahighschoolchoir.com/uploads/1/3/1/4/131437978/fizevemevol.pdf
    • https://cdn.shopify.com/s/files/1/0437/8565/0325/files/bioethics_in_canada_weijer.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6837/files/les_miserables_i_dreamed_a_dream_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0430/5240/0789/files/liroduxikivebekeji.pdf
    • https://cdn.shopify.com/s/files/1/0443/0639/9388/files/advantage_kills_destiny.pdf
    • https://cdn.shopify.com/s/files/1/0436/2502/1603/files/basketball_game_rules_and_regulations.pdf
    • https://cdn.shopify.com/s/files/1/0448/0968/3110/files/28182777079.pdf
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/35723152734.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/58091154710.pdf
    • https://cdn.shopify.com/s/files/1/0429/3305/9737/files/english_dictionary_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/8599377573.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_off00005968.bin
6cce6c330aeb4fb23643bd818836a00f1cf031e78dbdd9550e38f0e1a409afc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5968 4892 bytes
font_01_sfnt_off000069f7.bin
618fdcec7fbadd7f7507b088ca2ada2a8fd43664c889b0baa485783a04ecb8ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F7 9352 bytes
font_02_sfnt_off000089f2.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x89F2 4324 bytes