Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b1e968b52f9fab…

MALICIOUS

PDF

33.2 KB Created: 2020-08-20 06:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 537a7e2046c2225e89ff3b0e506dcb22 SHA-1: a3bc6142410b30b1dbe55ebfb6416ce74736304a SHA-256: f2b1e968b52f9faba3430ee29be67fbda8866356d954f2a28c3b4f79e230d8a2
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 a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Bengali new full movie'. The primary malicious URL identified is https://ttraff.cc/pify?keyword=bengali+new+full+movie++in+2019, which is likely used to redirect users to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or a method to obscure the final malicious destination.

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=bengali+new+full+movie++in+2019
    • http://nuxumuvir.babyg-lash.com/uploads/1/3/0/7/130775583/1617803.pdf
    • http://files.kendrickcheung.com/uploads/1/3/0/9/130969763/269966.pdf
    • http://xavajafe.alleyratzdog.com/uploads/1/3/1/4/131407227/1361013.pdf
    • https://cdn.shopify.com/s/files/1/0449/4855/3887/files/formulario_ser_bachiller_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/8773/2644/files/chicken_fry_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/2211/3173/files/woramasilajuxef.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/28555404719.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/kamuvobodikosutirivef.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0133/files/loborebufobojevo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4171/files/miwogonowufuwuxid.pdf
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/bestiariusz_warhammer_2ed.pdf
    • https://cdn.shopify.com/s/files/1/0437/4626/3201/files/arabic_to_urdu_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/saredejitatojuranatan.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5096/files/53030097052.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_off000045b8.bin
5fba394604dbb8f39fdf9b86a1ea1776041f3029f57a092b24e9110f7af3593b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45B8 5496 bytes
font_01_sfnt_off00005884.bin
70b83ab608871b05e7282a34c51854b2fc9ccd643e01fef1c517e8b3416552d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5884 9452 bytes

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