Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a65cef0d4534df9…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 23:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73bd89c71dbb216f25cc5f15b1cca8b6 SHA-1: 1abe2b92e842102f2999a25c782aec52fa1c6c58 SHA-256: 1a65cef0d4534df9df91e89a66ce7d47e9763888d2369e7f8255d1dd33ea4755
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting seemingly benign PDFs. However, one critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=selanik+m%25C3%25BCbadilleri+isim+listesi'. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites. No scripts were extracted, and the document body is largely unreadable binary data, making it difficult to determine the exact payload.

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=selanik+m%25C3%25BCbadilleri+isim+listesi
    • http://wojogof.lonestarfloor.com/uploads/1/3/0/8/130814687/sowilojijelapo-wawoxe.pdf
    • http://zumowajel.gammazeta-pistate-dkg.org/uploads/1/3/1/3/131379179/palalupakojobu-turak.pdf
    • http://files.subtek-music.com/uploads/1/3/2/6/132681826/9762463.pdf
    • http://files.friendsofhoddlescreek.com/uploads/1/3/1/3/131378950/pexobuviv.pdf
    • http://files.wyotransit.org/uploads/1/3/1/0/131070149/748b4dc1c.pdf
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/wapaxutuwetedigedotivo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5583/2471/files/65510781785.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73930450062.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/la_peste_albert_camus_francais.pdf
    • https://cdn.shopify.com/s/files/1/0436/7283/0105/files/bmw_x3_m_performance_2019.pdf
    • https://cdn.shopify.com/s/files/1/0432/0745/8975/files/vekagepudukut.pdf
    • https://cdn.shopify.com/s/files/1/0435/9123/7791/files/34658651171.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3733/files/bozopugidiwinufofifovudap.pdf
    • https://cdn.shopify.com/s/files/1/0439/7439/4014/files/tipobitugomuropoxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/6455/5675/files/61674142346.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/guitar_jam_track_free.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_off00005edc.bin
a45a70375b046fe157790941d5a205ec789fb2c2bac06b0850fe92d62c24837f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDC 5396 bytes
font_01_sfnt_off000070e6.bin
b3960d692b69176b020b1f4193c0249ffa18da6d8f42f9f61fc75860ba807112
pdf-font-stream PDF embedded font (sfnt) at offset 0x70E6 11968 bytes