Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ea9fc290b34df6…

MALICIOUS

PDF

64.9 KB Created: 2020-08-09 17:21:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eb0a9616117154aa8e8637f3b51304e SHA-1: 38ec81be5a9a49b51393d377c389f391722f8f62 SHA-256: d0ea9fc290b34df667c584d07562ceffc5968c607675f716ba26760a8f1f0cb0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=doxycycline+monohydrate+package+insert+pdf'. The document body, though heavily obfuscated, contains text fragments suggesting it is a package insert for doxycycline monohydrate, likely a lure to encourage clicking the malicious link. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute the 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.cc/pify?keyword=doxycycline+monohydrate+package+insert+pdf
    • http://files.financialwriterssociety.org/uploads/1/3/1/1/131163751/wobamapixuk.pdf
    • http://pixufegu.gettreschic.com/uploads/1/3/1/4/131453329/09fb6dde5d.pdf
    • http://files.theflamestillburns.com/uploads/1/3/1/6/131606603/d0d67364e5a0ac.pdf
    • http://files.callaghansofbirdslanding.com/uploads/1/3/2/8/132815872/4694398.pdf
    • http://files.aero-aoce.org/uploads/1/3/0/8/130814900/c7ec29cd78e5a.pdf
    • http://pixufegu.gettr
    • https://cdn.shopify.com/s/files/1/0437/0890/7688/files/69045657462.pdf
    • https://cdn.shopify.com/s/files/1/0429/7624/7971/files/67522771809.pdf
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/47228779702.pdf
    • https://cdn.shopify.com/s/files/1/0437/9534/9666/files/git_permission_denied_publickey.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/how_to_make_a_gmod_playermodel.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/58234448346.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/degradacin_de_protenas.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7665/files/kavepejurovubedezobejo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/15004274343.pdf
    • https://cdn.shopify.com/s/files/1/0435/9657/8975/files/coherence_bandwidth.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/lozogikis.pdf
    • https://cdn.shopify.com/s/files/1/0431/6410/6908/files/87605276291.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_off0000b275.bin
89f07278ef530d6a64a7f978db6b499131dde03bbc02242cd614f3d052fc2a5a
pdf-font-stream PDF embedded font (sfnt) at offset 0xB275 5804 bytes
font_01_sfnt_off0000c61d.bin
5bba1bb6fc6f4f54705a48e5996f62fa7af9f180e745d51eab6ff8d009367d41
pdf-font-stream PDF embedded font (sfnt) at offset 0xC61D 14700 bytes