Malicious PDF — malware analysis report

Static analysis result for SHA-256 8689f53a41f36abb…

MALICIOUS

PDF

42.5 KB Created: 2020-08-03 08:50:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bb81c0d66a2616cc7ac63e4604e495d SHA-1: 0a4dc720ce33c716bdf801262f9d12b09cac39e3 SHA-256: 8689f53a41f36abbdeaaeb38e694bc208b0da43b1871dfeed12d53f795d6f87a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a clear reference to 'Avi to mp4' and the malicious URL https://ttraff.com/pify?keyword=avi+to+mp4, suggesting a lure for users seeking file conversion services. The presence of a link farm heuristic further indicates malicious intent to distribute links. 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=avi+to+mp4
    • http://files.alidonaldson.uk/uploads/1/3/1/4/131437484/noraxunegul_vifuxugofolexu_peboloxukixe_sewisiluzutizin.pdf
    • http://files.swisskissgreaterswiss.com/uploads/1/3/0/8/130814343/zozabugopojix_punoje_dotaxum_rudesilebug.pdf
    • http://zojig.baln.org/uploads/1/3/1/4/131452922/83996.pdf
    • https://cdn.shopify.com/s/files/1/0437/9367/8497/files/59998312400.pdf
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/kodulekopuro.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/26806772528.pdf
    • https://cdn.shopify.com/s/files/1/0440/5559/3110/files/nakubamorukanisejosimazet.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3969/files/durave.pdf
    • https://cdn.shopify.com/s/files/1/0429/2011/6387/files/tisebibixefol.pdf
    • https://cdn.shopify.com/s/files/1/0431/6368/0929/files/28740622836.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/dodejafuxifiraranegawif.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/wudibibilekuzo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/zagutogeliweduburu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/35893075798.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.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_off00004c69.bin
42cbecc259d1e5d2a6eb05752988aaeac5b87d199c437233a98a5277f8bd9a9b
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C69 4588 bytes
font_01_sfnt_off00005bf9.bin
48115d67ddc642308bb5067f190eb58d784f7bdbedcd0d0fe5a959723415bc20
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF9 11436 bytes
font_02_sfnt_off00007c43.bin
e2557e7603c9c80ae819ed1ef2e20fcb804420890b181a1c39fb24fa5570d9b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C43 9564 bytes