Malicious PDF — malware analysis report

Static analysis result for SHA-256 f46abcfcd1919766…

MALICIOUS

PDF

38.9 KB Created: 2020-08-08 11:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49032df087e150cb5ed069b1fd69f889 SHA-1: fd78b8e3d7d452dc5e1d63e50f3dada278708b7f SHA-256: f46abcfcd19197664d6e9d4700e5af7555e664e2384f03fb51cf0e1ef8dc4a10
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious websites. The presence of a mass external PDF link farm further supports this, indicating a potential SEO poisoning or spamming campaign. No scripts were extracted, and the document body was largely unreadable, so the assessment relies heavily on the URL analysis and heuristic findings.

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.com/pify?keyword=comma+usage+test+pdf
    • http://files.shelbyartists.org/uploads/1/3/2/8/132814261/360114d.pdf
    • http://files.coonhoundcamping.com/uploads/1/3/0/8/130813417/dudamogujavov.pdf
    • http://sivarenek.detroitmusiclive.com/uploads/1/3/1/4/131406390/201255b5712.pdf
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/radolizelisidezadu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/9974448548.pdf
    • https://cdn.shopify.com/s/files/1/0430/2431/8618/files/dictionary_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0431/2324/5216/files/toastmasters_how_to_listen_effectively.pdf
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/cluster_sampling_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/70439566386.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/17943263730.pdf
    • https://cdn.shopify.com/s/files/1/0436/2751/1961/files/fafozatikefujezovun.pdf
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/noruzolozibafalek.pdf
    • https://cdn.shopify.com/s/files/1/0429/2630/9535/files/74354534429.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_off000059f2.bin
ed08b96dd23b4739320465c7a0da891c0d5b83dc1debcdacfe03e19365331fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F2 5140 bytes
font_01_sfnt_off00006b5d.bin
4d1c95618a8c3ce0020d8504b66a3429bf18c74ebe2295dd471750b3c5134822		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5D 10580 bytes

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