Malicious PDF — malware analysis report

Static analysis result for SHA-256 caf9011e281c2344…

MALICIOUS

PDF

46.8 KB Created: 2020-08-06 22:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70f330675cb3b27ef6a3e806d11e38c9 SHA-1: 27504aabd733cfba992f3b8191d2e3f51bb728f7 SHA-256: caf9011e281c23443018da12c5eddf39b735737716c9824d24a3a3bb37996c13
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'keto meal plan pdf'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=easy+keto+meal+plan+pdf
    • http://files.supportiveconceptionssurrogacy.com/uploads/1/3/1/4/131409909/954939c1cd3ced.pdf
    • http://files.desertpointkennels.com/uploads/1/3/1/6/131606140/jejenag.pdf
    • http://files.littleleafflutestore.com/uploads/1/3/0/9/130969798/4974598.pdf
    • http://files.ranchodelriosaddlebreds.com/uploads/1/3/1/3/131398250/5972277.pdf
    • http://gemag.freighthouseconsign.com/uploads/1/3/1/4/131482975/9877497.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22700630349.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/zaliraxinatewaxidugeze.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdf
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/dedunuzevedajesejipaxadif.pdf
    • https://cdn.shopify.com/s/files/1/0430/6550/8002/files/favumopapa.pdf
    • https://cdn.shopify.com/s/files/1/0440/5044/8549/files/osrs_balloon_transport.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2506/files/all_quiet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/gufisiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/22901157293.pdf
    • https://cdn.shopify.com/s/files/1/0437/8994/2945/files/fuerzas_intermoleculares_del_agua.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/viravigejebeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9648/files/56007080450.pdf
    • https://cdn.shopify.com/s/files/1/0435/9805/3535/files/how_to_unzip_a_file_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/gokerolefavojowado.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_off0000791e.bin
47157069b7b05ce16322d75fdbb177d9677281ae841f29cb41eaddc49c04fcbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x791E 5212 bytes
font_01_sfnt_off00008ae1.bin
b96be3eb12496b592e694b872ec57b98c81cddbe5b9237bd3436fa506a4c74d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE1 10292 bytes

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