Malicious PDF — malware analysis report

Static analysis result for SHA-256 8598ce4f5f3e9351…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 13:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c3023073ac59193317f0c6da6c3ac1e SHA-1: 4e4d551c1f6ef93e8e5a795370cebf18f0c6c577 SHA-256: 8598ce4f5f3e93517d57d274e193dc2b7cf273d64e4a0ad47a6cdd9461d045b7
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, specifically pointing to 'https://ttraff.cc/pify?keyword=ocarina+of+time+n64+guide'. This indicates an attempt to lure the user to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. No scripts were extracted from this sample, but the presence of the malicious redirector URL is a strong indicator of malicious intent.

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.cc/pify?keyword=ocarina+of+time+n64+guide
    • http://mowamape.unleashyourpower.org/uploads/1/3/1/3/131380983/juremenek.pdf
    • http://files.development12508.com/uploads/1/3/1/3/131378923/640a92ca6e.pdf
    • http://files.thekesine.com/uploads/1/3/0/8/130815277/7f9900373d6.pdf
    • http://wuzof.listerrentsequipment.com/uploads/1/3/1/3/131380213/1618031.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9605/files/74708320869.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/30096593880.pdf
    • https://cdn.shopify.com/s/files/1/0431/4005/5208/files/88685804296.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/91059269241.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/87709742690.pdf
    • https://cdn.shopify.com/s/files/1/0432/2725/0850/files/20165847867.pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/95132596228.pdf
    • https://cdn.shopify.com/s/files/1/0437/5104/7329/files/99377465095.pdf
    • https://cdn.shopify.com/s/files/1/0433/3977/6159/files/11718298481.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/xigub.pdf
    • https://cdn.shopify.com/s/files/1/0428/6103/5686/files/titekotorutenomawov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xopafomapezujiwowab.pdf
    • https://cdn.shopify.com/s/files/1/0431/2232/7706/files/barron_s_sat_subject_test_chemistry_14th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/tiwulobobo.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_off00006e65.bin
59db4fc51cbc5462564b3afe00915fe54c58ce999501aac46364700c4ce4f203		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E65 5400 bytes
font_01_sfnt_off000080a5.bin
fdceef8d9a3e997789c3a3f771320c41fae5d9d88e79408fa9461c10ef47765c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80A5 10428 bytes

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