Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a243d88cb9d51e…

MALICIOUS

PDF

46.7 KB Created: 2020-08-05 17:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b842f9b2f3bd0744dd3adf94ad6c35f SHA-1: e09d8bef8f087110e2fbb25890538c17de312be0 SHA-256: 46a243d88cb9d51ecbcdc76b11baaaaae380c8df90bcca263f6d01cc110446a0
150 Risk Score

Malware Insights

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

The PDF document was flagged as malicious due to the presence of a redirector link pointing to known malicious infrastructure. It also contains a large number of external PDF links, characteristic of a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=volantino+esselunga+pdf, which likely serves as a gateway to further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=volantino+esselunga+pdf
    • http://files.diannesk9connection.com/uploads/1/3/0/9/130969191/a0ed3e62.pdf
    • http://files.adamhager.com/uploads/1/3/1/6/131636807/bosejo.pdf
    • http://files.michiganroofmasters.com/uploads/1/3/0/9/130969925/xipudumawalim.pdf
    • http://files.ritecookware.com/uploads/1/3/0/9/130969834/zononulusod-naluki-kurunazam.pdf
    • https://cdn.shopify.com/s/files/1/0441/1283/8808/files/57972527149.pdf
    • https://cdn.shopify.com/s/files/1/0431/8940/3810/files/15813424877.pdf
    • https://cdn.shopify.com/s/files/1/0435/7187/1912/files/xazukegevasozorexos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0776/1819/files/barbara_o_neill_natural_remedies.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/xojofajaximuru.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/19714534207.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9009/files/pepomi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3637/6231/files/metositevefesugasobolufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2328/5928/files/58698595253.pdf
    • https://cdn.shopify.com/s/files/1/0428/9930/8700/files/tasodizudesi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/mafaxonupuja.pdf
    • https://cdn.shopify.com/s/files/1/0440/1653/3654/files/71566850982.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_off00007234.bin
5c7bee974bc5cbeb93c0c2d6eb9ceb069601264fc917704158cda9664c05f147		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7234 5076 bytes
font_01_sfnt_off00008398.bin
de1da2a20134f82cc86a5629dc1ea4ab18c65a4615765fc533d43a834c620580		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8398 13528 bytes

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