Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e75d993042eedef…

MALICIOUS

PDF

135.3 KB Created: 2020-08-20 02:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 631340cf762b262f33a47e03970480af SHA-1: 46175589960dd152063215558557768bc253d982 SHA-256: 2e75d993042eedef0e736d912b330f3889ebaca774c36b088237a89a3d12c78a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded URLs, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. The document also includes a heuristic indicating a 'Password-protected archive lure', suggesting the user is prompted to open a password-protected file, which is a common tactic for evading initial security scans. The presence of numerous links, including a 'link farm', further supports a malicious intent to drive traffic to potentially harmful sites. The document body itself contains obfuscated text and a reference to the malicious URL, reinforcing the attack pattern.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=gitlab+custom+ci+templates
    • http://files.drlindseybeavenmft.com/uploads/1/3/1/4/131438616/gototikige.pdf
    • http://files.shopgatheredhomedecor.com/uploads/1/3/0/7/130739835/darikamidamuf-kajoru.pdf
    • http://files.empowerdancewellness.ca/uploads/1/3/0/8/130874205/lurofuwujelojotasar.pdf
    • http://files.paiboon.biz/uploads/1/3/1/4/131406762/1208977.pdf
    • http://files.marklasallefineart.com/uploads/1/3/1/6/131637114/1231210.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/47804369484.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/firepevi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/sefolomekixogugipirivaji.pdf
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/arbol_de_decisiones_ejemplos_resueltos.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8664/files/oxford_collocations_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8037/files/ice_rajkot_bin_sachivalay_paper_set_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/62022784329.pdf
    • https://cdn.shopify.com/s/files/1/0428/2010/8455/files/zalowamixekalujunominowu.pdf
    • https://cdn.shopify.com/s/files/1/0438/8972/1496/files/reliability_theory_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/dozitetalebavexod.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_off0001d136.bin
584361f467771ff503dae5da67724f2f25572f0e1e943de638f0fb7b3b991a69
pdf-font-stream PDF embedded font (sfnt) at offset 0x1D136 5152 bytes
font_01_sfnt_off0001e2a6.bin
ebeb1dbbef8143629e7a0cd77819024420e4cfedc84054413e7e7ff5786e2e4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1E2A6 13968 bytes