Malicious PDF — malware analysis report

Static analysis result for SHA-256 caf61eb154fe9226…

MALICIOUS

PDF

44.9 KB Created: 2020-08-18 19:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 416dde03aceb7cff5b2617833a8cb758 SHA-1: 355810bff0ea5b5df83a5c9bc0dc63a6f105d6a8 SHA-256: caf61eb154fe92265592fdf812639de84533d7bb7a179cb03d8079757e62625f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body is heavily obfuscated, but the presence of the malicious redirector and the link farm heuristic strongly suggest a malicious intent, likely to drive traffic to malicious sites or for SEO abuse. No scripts were extracted from this sample.

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=bewars+movie+ringtones+naa+songs
    • http://ridixalal.jonathanodell.net/uploads/1/3/0/9/130969945/a0730ffda18d.pdf
    • http://files.andreaquinnphotography.com/uploads/1/3/1/0/131070173/zejula.pdf
    • http://ramagogi.themaridor.com/uploads/1/3/0/7/130740044/luzol-lekutuketeki.pdf
    • http://files.katemcculloughwaterart.com/uploads/1/3/2/3/132302716/8915349.pdf
    • http://files.justgivemepositivenews.com/uploads/1/3/1/4/131454034/a991e6.pdf
    • http://ridixalal.jonathanodell.net/uploads/1/3/0/9/1309
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/28951134514.pdf
    • https://cdn.shopify.com/s/files/1/0447/2212/7004/files/rastafarian_language.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gabagijujusudizal.pdf
    • https://cdn.shopify.com/s/files/1/0429/1595/4847/files/pukerudexol.pdf
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/mezijuzidekumufemus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0612/2393/files/22007886820.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/7_characteristics_of_living_things_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/assizes_of_jerusalem.pdf
    • https://cdn.shopify.com/s/files/1/0434/0976/8600/files/polivewerokexesuserilun.pdf
    • https://cdn.shopify.com/s/files/1/0429/2460/5599/files/appsc_exam_calendar_2020.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_off00005d4e.bin
1d41047fb29293e847c1cd9d34f69e753a877a9496650a08286bff6dbb8a60ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4E 5172 bytes
font_01_sfnt_off00006eea.bin
fa87ca633fa27efb1999abdc09957b81d62e7961be8523040c17f3d014cabcd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEA 2496 bytes
font_02_sfnt_off00007a3f.bin
6755951864917f9be91a5d856c58f144e9cd48b0746fec14508f95741269b1e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3F 14044 bytes