Malicious PDF — malware analysis report

Static analysis result for SHA-256 40835fbdfcb73bec…

MALICIOUS

PDF

34.3 KB Created: 2020-08-21 19:57:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 667f679173278e4bf200583094e702ab SHA-1: 997a223f026b3609d56c676c64ec7390888862e9 SHA-256: 40835fbdfcb73bec0577dfcac62f063f8ac229e56deb120475cb11c546903465
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to `https://ttraff.cc/pify?keyword=gold+peep+toe+platform+heels+uk`. This URL is likely used to redirect users to a phishing page or a site hosting malware. The document also contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning attempt. No scripts were extracted from this sample.

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=gold+peep+toe+platform+heels+uk
    • http://files.themotivationalshop.com/uploads/1/3/2/6/132682974/a5b4bf98016.pdf
    • http://penuxad.tcjewelers.com/uploads/1/3/1/4/131407089/zosufati-fuzuzubakere-rotupodawupoxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/5916/7900/files/50_sombras_de_grey_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4805/0586/files/common_stocks_and_uncommon_profits_and_other_writings.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3318/files/udp_tracker._openbittorrent._com_80_announce.pdf
    • https://cdn.shopify.com/s/files/1/0449/3488/9627/files/bajaj_finserv_logo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/bajufeworub.pdf
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/8548524011.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8402105605.pdf
    • https://cdn.shopify.com/s/files/1/0433/9639/9265/files/teaching_job_cover_letter_sample.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/77534487306.pdf
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/natelazamibid.pdf
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/zuvujukojaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/3166/5562/files/pneumonia_guidelines_idsa.pdf
    • https://cdn.shopify.com/s/files/1/0440/9622/5432/files/javascript_reverse_array.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_off000043cd.bin
e212d634aa8edbaed255f3c9497836c2286864ef741d062420da00964d4f6ee4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43CD 5376 bytes
font_01_sfnt_off000055f9.bin
f642aedc571de4c66aac8a77cceabcc1f06a06266ad2028a4764b3066d3aed92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55F9 11496 bytes

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