Malicious PDF — malware analysis report

Static analysis result for SHA-256 290104c54c59ae98…

MALICIOUS

PDF

44.4 KB Created: 2020-08-03 04:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ad9e29e10cce575e978f560b431aebb SHA-1: 581679752f875714c65ba0e21b59b72129e73a90 SHA-256: 290104c54c59ae984a4c76a32f971276bc244fdffcc042d94f920b4479518262
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, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body text, though partially corrupted, suggests a lure related to 'physical therapist assistant exam review guide pdf'. The primary malicious URL identified is https://ttraff.com/pify?keyword=physical+therapist+assistant+exam+review+guide+pdf, which is likely used to redirect users to further malicious sites.

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=physical+therapist+assistant+exam+review+guide+pdf
    • http://files.mikebreyer.com/uploads/1/3/1/0/131070872/8513128d0f4.pdf
    • http://files.hiddencovelodge.com/uploads/1/3/0/7/130738852/7480752.pdf
    • http://files.pentictonnewcomers.com/uploads/1/3/2/6/132682787/3704405.pdf
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/73598594445.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/bapetilowopuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/5320/3102/files/movafufovisekiboxewo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1426/files/fogufer.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/72937103387.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/99506444981.pdf
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/tusezalarurujiponibalam.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/5285919522.pdf
    • https://cdn.shopify.com/s/files/1/0438/3460/5728/files/wumukakidomilema.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/zijigajitetel.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/funurotoju.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/75126765051.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_off00006e72.bin
87af2c4a8018ce4b9eb6318f55cf1eb312722e09c46873a7976e037c086146ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E72 5892 bytes
font_01_sfnt_off0000827e.bin
c47e034caa59b9df35ebc702daa9f3a2d9e0554f4ddbf9d676bb1cb085e61ab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x827E 9860 bytes

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