Malicious PDF — malware analysis report

Static analysis result for SHA-256 92b4b7236744e1af…

MALICIOUS

PDF

67.7 KB Created: 2020-08-25 00:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61582ac9c6580de7f636b00eba8ddbd6 SHA-1: 5721627022c8e089283856addc2bce4e2d2d8d7b SHA-256: 92b4b7236744e1af25e701aacf61d5ce5d2ff7698dc2fadde71503ee96612201
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=bijli+song++tamil'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0430/4565/0586/files/meperavonojoji.pdf'. The document body, though heavily corrupted, contains the malicious URL and appears to be a lure related to a song title. The primary attack vector is likely social engineering via a malicious link embedded within the PDF.

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.com/pify?keyword=bijli+song++tamil
    • http://mojedesu.jennyharrison-author.com/uploads/1/3/1/4/131406821/gisezukijezino_pidij_dujitetuw.pdf
    • http://jimexuve.oldjohnsrugbyclub.com/uploads/1/3/1/6/131606577/1b7bafa01646e.pdf
    • http://files.limassolsportsmassage.com/uploads/1/3/0/8/130874129/laxuvovobopekidom.pdf
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/meperavonojoji.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/gem_uninstall_all.pdf
    • https://cdn.shopify.com/s/files/1/0437/8175/0941/files/pujidawelagul.pdf
    • https://cdn.shopify.com/s/files/1/0436/1116/0738/files/transformers_bumblebee_movie_coloring_pages.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/practical_palmistry.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdf
    • https://cdn.shopify.com/s/files/1/0439/7016/6942/files/87730725213.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/xenitedofo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/jipumovi.pdf
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/babla_hu_me_babla_song.pdf
    • https://cdn.shopify.com/s/files/1/0428/0988/4838/files/migori.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aa98.bin
21a16abeed801160a6e23b35dd1cd2913d325a0d5831f95559caf800c5d6142c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA98 5036 bytes
font_01_sfnt_off0000bb9f.bin
f63b29678dcebf73a1ae6c3c0be0067d3a0de7fd74b78fde9094222e42c89293		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB9F 2420 bytes
font_02_sfnt_off0000c69d.bin
51b270d08be33f2c103d3a882c40308973e67c778fac009cba6e2c943bdde039		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC69D 10864 bytes
font_03_sfnt_off0000ebf7.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF7 16164 bytes

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