Malicious PDF — malware analysis report

Static analysis result for SHA-256 f22d73a0b7225a12…

MALICIOUS

PDF

48.4 KB Created: 2020-08-19 12:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab6b33486f68c03a7b8b09e4ddd0e846 SHA-1: 0437022a3928f9ec2671fa201885ceee0e63f83b SHA-256: f22d73a0b7225a12ed174eec3e2b9ddc7cd5b9eb31b1b434f5503bd7a6090660
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though partially garbled, includes text related to a 'timetable' and a URL that is also present in the document body, suggesting a lure. The presence of a callback phishing lure heuristic further supports the malicious intent. The primary malicious IOC is the redirector URL, which likely leads to further stages of an attack.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=cheltenham+festival+of+performing+arts+timetable+2018
    • http://files.escondidofoundationarch.org/uploads/1/3/2/7/132712508/suvidinakavubowu.pdf
    • http://files.threeaineconsultancy.com/uploads/1/3/1/0/131070125/587526f65.pdf
    • https://cdn.shopify.com/s/files/1/0448/4051/7793/files/94940688445.pdf
    • https://cdn.shopify.com/s/files/1/0439/2743/7467/files/388543525.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/22085948819.pdf
    • https://cdn.shopify.com/s/files/1/0433/9220/4950/files/89201024330.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/ketogenic_diet_plan_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/kezexufagimomo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/56831502849.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/8319316747.pdf
    • https://cdn.shopify.com/s/files/1/0440/0971/7910/files/68844389515.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/72194884169.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_off0000588c.bin
742c08c6485fba7cce507adcb75125e2182b61ea9df097fff05109d0de644109
pdf-font-stream PDF embedded font (sfnt) at offset 0x588C 5844 bytes
font_01_sfnt_off00006c4c.bin
f16e9559089fc4c2695bfa62fd3eba88ca58405d51ef5d08e08a9cfbac99e751
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4C 10644 bytes
font_02_sfnt_off000090e0.bin
794d8cc090a449e0d460036171b2d5b2c749cb0dc3f17972c44626ada68ee3d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x90E0 16168 bytes
font_03_sfnt_off0000a5e6.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E6 4324 bytes