Malicious PDF — malware analysis report

Static analysis result for SHA-256 b012beb9020899f7…

MALICIOUS

PDF

42.9 KB Created: 2020-08-23 04:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51af0a7c79b4be0931ac148a07a8c4d9 SHA-1: c068bd06dffc9312717070637731c9d9dea36ebb SHA-256: b012beb9020899f73b1d19a9b738a4e322ac201ca7f6aaff6f942ef429f26f09
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The embedded URL, 'https://ttraff.cc/pify?keyword=answer+customer+complaint+letter+sample', is presented as a customer complaint letter sample, indicating a social engineering lure. The PDF structure and embedded links suggest a phishing or scam attempt to redirect users to 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.cc/pify?keyword=answer+customer+complaint+letter+sample
    • http://files.angelamorales.net/uploads/1/3/1/0/131070934/wumidatafivobiziwow.pdf
    • http://tiluwami.plateauvalleyanimalhospital.com/uploads/1/3/0/9/130969627/b893b.pdf
    • http://files.brisbanedanceworkshop.org/uploads/1/3/1/4/131437615/5717badcb25d3.pdf
    • http://files.akersart.com/uploads/1/3/2/6/132695732/pupabutejex.pdf
    • https://cdn.shopify.com/s/files/1/0439/5122/7048/files/xeravax.pdf
    • https://cdn.shopify.com/s/files/1/0437/2011/4331/files/nizakobezekowapoji.pdf
    • https://cdn.shopify.com/s/files/1/0432/7781/1867/files/lunalubumixapuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/bajep.pdf
    • https://cdn.shopify.com/s/files/1/0438/0036/3169/files/32588032460.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45366335679.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/aaos_biceps_tendinitis.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_off000067d0.bin
f05bbf6347355068f77d5909b97bd950b24c8c653aebfe40715adcec2c7e6770		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D0 5160 bytes
font_01_sfnt_off0000794e.bin
b64bcf26a249dd335338ce0f474afcf8269d601cc71371601e602926d61a576a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x794E 10844 bytes

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