Malicious PDF — malware analysis report

Static analysis result for SHA-256 84341263e43cb1bb…

MALICIOUS

PDF

37.1 KB Created: 2020-07-30 07:28:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe86ee65618a1b085b9bebe47b859087 SHA-1: 012e55dd867eea2c43655d22218d9a29db893015 SHA-256: 84341263e43cb1bb7a419b03045f5d2d56981c61bdaf8e13ebd4271d0f75ddcd
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of the primary links points to a known malicious redirector. The document body, though heavily obfuscated, appears to contain metadata related to the PDF's creation, but no direct user-facing text is discernible. The heuristic firings strongly indicate a malicious redirection attempt and a link farm strategy.

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=fleetwood+mac+landslide+tab+pdf
    • http://files.musictomymind.com/uploads/1/3/2/6/132682281/1472329.pdf
    • http://files.706wrestling.com/uploads/1/3/1/8/131856041/punubebik-sasafat-bukav.pdf
    • http://files.feideartha-hypno-practice.com/uploads/1/3/2/6/132682990/zifigom.pdf
    • http://files.mfmetalarts.com/uploads/1/3/1/3/131379217/dasaveduve_zusuba_xejit.pdf
    • http://files.hamptonluxe.com/uploads/1/3/0/7/130739871/79675d.pdf
    • https://cdn.shopify.com/s/files/1/0434/1855/0429/files/fawuvupedanisewotajod.pdf
    • https://cdn.shopify.com/s/files/1/0431/2943/8370/files/rokosujigumaluvexosavo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/vinubax.pdf
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/94308917667.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/84454851937.pdf
    • https://cdn.shopify.com/s/files/1/0429/6628/6490/files/zusuluzivukeliwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1553/6793/files/45374330431.pdf
    • https://cdn.shopify.com/s/files/1/0432/7296/2203/files/posimiferisok.pdf
    • https://cdn.shopify.com/s/files/1/0431/9127/1586/files/2966512171.pdf
    • https://cdn.shopify.com/s/files/1/0432/3003/6123/files/rotoduxavuvobeburusagu.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/
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054b7.bin
1b7d7c9429533ce5112c900ae180ee5656f1000649df532e9f232c0645679386		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54B7 5180 bytes
font_01_sfnt_off0000664e.bin
bb980492e7c0fc6763d98069f99abbefc7484333f895da2e58df805f3b3d218d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664E 9768 bytes

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