Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ade42721db2f6b…

MALICIOUS

PDF

33.0 KB Created: 2020-08-10 03:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abe81d9d581f6050785a4f0f7c23cc64 SHA-1: 8eb3cffc497049add364c3bb89a7038946b2a629 SHA-256: 75ade42721db2f6b453cb4606eab30b23dcdfae51b7338470f71c681ae6e2e97
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=neolithic+revolution+quiz+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The ML classifier also strongly flagged this PDF as malicious. The presence of these indicators suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=neolithic+revolution+quiz+pdf
    • http://files.imagesbya2zphotography.com/uploads/1/3/1/4/131438329/sorulorenupixa_guriwap.pdf
    • http://files.sararosinsky.com/uploads/1/3/0/7/130740051/4857763.pdf
    • http://files.theenergyalignmentcoach.com/uploads/1/3/0/7/130775505/vukipebube-jajipo-nazatiritim-sesopek.pdf
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/jamopivipe.pdf
    • https://cdn.shopify.com/s/files/1/0438/0711/3373/files/revista_eudora_ciclo_6.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0108/files/sigewegiraxuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/maths_book_class_10_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/49282840980.pdf
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/zubibozobazukome.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/rubogigekutofovuxiwa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/romuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/xubadabakoreziwugavuten.pdf
    • https://cdn.shopify.com/s/files/1/0431/1885/4306/files/80836251136.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/91424620594.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_off000044ba.bin
c0a60d141a07df019be3a012b14e69337e6507556741b08ae01bcb18d24835ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44BA 5060 bytes
font_01_sfnt_off00005600.bin
eb8d7ca1e537103dda2bf2d1244c3378114392c7ad3fa5f4256e12b56dced20f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5600 9644 bytes

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