Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7fcd6e2318c806…

MALICIOUS

PDF

40.5 KB Created: 2020-08-21 05:37:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9431dabac0efc788a2a569542e56caff SHA-1: af2cc49c4c04c4744d40f405a570f30679c6716f SHA-256: bf7fcd6e2318c8063f5769b4cde90ca1b6aeb9ac229c42ecbf51e3610d40d79b
120 Risk Score

Malware Insights

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

The PDF contains a deceptive weather report and a large number of embedded links, many of which point to Shopify domains hosting other PDFs. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious payload. The document body itself is heavily obfuscated but contains the malicious redirector URL and several other PDF links, suggesting a link farm or redirection attack.

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=pandharkawada+yavatmal+weather+report
    • http://files.bviolinsltd.com/uploads/1/3/2/6/132681384/jajuruw-zubabiwo.pdf
    • http://files.janda.services/uploads/1/3/1/6/131606475/tuvosar_bazisavune_piforesovop.pdf
    • http://files.rhemayoga.com/uploads/1/3/0/7/130738870/4162692.pdf
    • http://files.timberlinetrailandnature.com/uploads/1/3/2/6/132696598/denofipuwe-dulapa-zuludesa-nerani.pdf
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/fetepalepas.pdf
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/letters_and_sounds_phase_3_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/setikufavel.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/kulapitokalaret.pdf
    • https://cdn.shopify.com/s/files/1/0440/2341/4942/files/moldes_fofuchas.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/bowuxojuvuza.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/foxanawojo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pedarivorenali.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/nakunabaruse.pdf
    • https://cdn.shopify.com/s/files/1/0429/1251/4201/files/tanixerebikowu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/broken_vow_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0447/6341/4679/files/fishing_report_utah_western_rivers.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/39018882964.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
font_00_sfnt_off0000513b.bin
78e460517c66ed20a48bf1968863ec283cf215baa52e22175e3b0756f107d373
pdf-font-stream PDF embedded font (sfnt) at offset 0x513B 5080 bytes
font_01_sfnt_off0000625d.bin
d65d82d9a8efd263f8d043335358f4b3eab8fb06351d011e6c3efdba96a574a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x625D 10872 bytes
font_02_sfnt_off000086e3.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x86E3 4324 bytes