Malicious PDF — malware analysis report

Static analysis result for SHA-256 d847ed80b2ebdae6…

MALICIOUS

PDF

53.3 KB Created: 2020-08-10 11:24:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a53920a3251ec89e35f0010490e19893 SHA-1: 2d508b340e08c93b9fc4d0913c1790dec19fdb20 SHA-256: d847ed80b2ebdae613714917b7f0515443d7bc1c68ecd713b49fb81f32203cf1
128 Risk Score

Malware Insights

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

The PDF file contains a lure for downloading content, which is a common tactic for phishing and malware distribution. The embedded link directs to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The file also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm designed to improve search engine ranking for malicious content or to obscure the true destination.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=islamic+quotes+in+urdu+pdf+free+download
    • http://files.canalmusicfest.com/uploads/1/3/1/1/131163914/8314553.pdf
    • http://files.ccapsummerinstitute.com/uploads/1/3/1/3/131383251/c9d4d26.pdf
    • http://files.genevauu.org/uploads/1/3/0/7/130775299/5186191.pdf
    • http://files.whoi.ca/uploads/1/3/0/8/130814308/05d94ee58.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/jafapamijogasijegavixaba.pdf
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/48240806608.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/92689454251.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/belufinorupovew.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3330/files/runozilekizumoxu.pdf
    • https://cdn.shopify.com/s/files/1/0447/8284/6109/files/convert_base64_string_to_online.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/vefifikudobug.pdf
    • https://cdn.shopify.com/s/files/1/0431/9523/6509/files/17462071571.pdf
    • https://cdn.shopify.com/s/files/1/0434/9663/6580/files/wepaxeva.pdf
    • https://cdn.shopify.com/s/files/1/0435/3966/0951/files/tesun.pdf
    • https://cdn.shopify.com/s/files/1/0447/6724/8535/files/vehicle_aerodynamics_book.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000098f4.bin
e8553ea46e24b4a891e6aea4115260874195dca859c821dfd730dadd6fd801e2
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x98F4 27172 bytes
font_00_sfnt_off000062e0.bin
40d4c652019417cdae3ebe6c81e705f649bfa8000629f8885da2074eb245ca13
pdf-font-stream PDF embedded font (sfnt) at offset 0x62E0 5456 bytes
font_01_sfnt_off00007568.bin
58a692ceb152b3d46e1faceb2fb8645870dd590d008fbae622aeb6b1a637f2db
pdf-font-stream PDF embedded font (sfnt) at offset 0x7568 10576 bytes