Malicious PDF — malware analysis report

Static analysis result for SHA-256 26255f52d4b61f84…

MALICIOUS

PDF

44.5 KB Created: 2020-08-19 16:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ace3729aecc2324e73043c7133ed763 SHA-1: 6a23cfabf9bb5297da47b1b2815c407377573a0e SHA-256: 26255f52d4b61f848206c6b1ddcf18e8d78095f7ad8539fd587149e52c3dfaa3
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One prominent URL, 'https://ttraff.ru/pify?keyword=bittorrent+android+save+location', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other embedded links, suggesting an attempt to drive traffic to potentially harmful content.

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=bittorrent+android+save+location
    • http://zuparam.lifeword.nl/uploads/1/3/0/7/130738714/xagibukugi.pdf
    • http://xiweduji.peacekeepersinc.com/uploads/1/3/1/0/131070115/bovutowojasugu.pdf
    • http://files.nadinemanion.com/uploads/1/3/1/4/131437881/zakatizow.pdf
    • http://files.drhannahcurtis.com/uploads/1/3/2/7/132740545/lazilip.pdf
    • http://files.madolifarms.com/uploads/1/3/1/4/131437699/wemopibizemapo_dadatexi_jijuwunepiv_vibezasuduluk.pdf
    • https://cdn.shopify.com/s/files/1/0435/4503/4911/files/15009697373.pdf
    • https://cdn.shopify.com/s/files/1/0435/8216/1053/files/boeing_ethical_business_conduct_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6037/files/83614742624.pdf
    • https://cdn.shopify.com/s/files/1/0437/8558/4792/files/suzofegitidunu.pdf
    • https://cdn.shopify.com/s/files/1/0447/9975/4397/files/arthur_conan_doyle_the_lost_world_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5268/files/97062454163.pdf
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/bedenkenanmeldung_vob.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/7789032273.pdf
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/getefisojuxovunitapeto.pdf
    • https://cdn.shopify.com/s/files/1/0433/8712/5927/files/burexe.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/92825381162.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/31077435666.pdf
    • https://cdn.shopify.com/s/files/1/0433/5216/2462/files/32903660831.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_off00007061.bin
3d759d2fa6bcd73cf8331fc087ebbb45a0746772b7e074efb277ede07080188c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7061 5040 bytes
font_01_sfnt_off0000818d.bin
62d5687d65c1d23306e049dba5cbe74f47ce617d0505ed0ea7cf128a5d1287fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x818D 10364 bytes