Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2bc1081392a0121…

MALICIOUS

PDF

38.6 KB Created: 2020-08-20 20:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d2ca250f6cc7f831748109c3185d1b4 SHA-1: 949eb694406e29035bbaa4daae9daf996261344e SHA-256: f2bc1081392a0121e7db29e5c7baf99d5dafe81a5a9992a990f13464950cb855
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 external resources, indicating a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Oecd transfer pricing guidelines 2015 pdf' and references the wkhtmltopdf tool, suggesting a lure to download or access malicious content disguised as a legitimate document. 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=oecd+transfer+pricing+guidelines+2015+pdf
    • http://files.newsilkstrategies.com/uploads/1/3/1/4/131438708/dedukogagax.pdf
    • http://files.cranewyork.com/uploads/1/3/0/7/130738960/nakivenajamoj_miwaxesimo_rirenebome_revofuvoful.pdf
    • http://files.colegiocumbaya.org/uploads/1/3/1/4/131483492/323423.pdf
    • http://files.maptecit.co.uk/uploads/1/3/0/7/130740184/vuboravevox-ladusikigunebaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2856/files/wefutifiwokepozomo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9969/9866/files/dupusutataxifipalul.pdf
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/suporigasotabugoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/tigovoxilejagesutojixa.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0810/files/97805495871.pdf
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/2713418915.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4070/files/ketif.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/34267482570.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_off0000584a.bin
fff661b882fb18339a5eb0e28b08103312ead1f8ad998c61f87234b79bf96bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x584A 5800 bytes
font_01_sfnt_off00006c17.bin
85a4532c3d2ddd256852353638a1e5fea60b4d47c691063053c0f5c00edc025d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C17 9816 bytes

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