Malicious PDF — malware analysis report

Static analysis result for SHA-256 f135ee1adb113d42…

MALICIOUS

PDF

49.8 KB Created: 2020-08-04 12:33:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 838b4ff350d24a341bfa81b7463f3f14 SHA-1: 6784362f2372627f21669471e660fa8a0a46c553 SHA-256: f135ee1adb113d42e29d5910792cf8057b92022de795808e0e34c07d412a2523
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=bukhari+hadees+urdu+pdf', which is also listed as a malicious redirector. This suggests the primary attack vector is to lure users into clicking this link, leading them to malicious infrastructure.

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.ru/pify?keyword=bukhari+hadees+urdu+pdf
    • http://fofapagof.danieleantoniella.com/uploads/1/3/1/4/131438641/javixufoselonuw-virafewo.pdf
    • http://luvoxo.stifm.com/uploads/1/3/1/8/131856543/9287653.pdf
    • http://files.melioraicecream.com/uploads/1/3/1/3/131380870/gapuva.pdf
    • http://files.chelseagsps.com/uploads/1/3/1/3/131398504/nufogotajam-seguwofibo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8098/8325/files/46638878884.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/wajalizejuvedefugemomag.pdf
    • https://cdn.shopify.com/s/files/1/0438/4718/8640/files/64936230997.pdf
    • https://cdn.shopify.com/s/files/1/0450/6284/8664/files/lista_remota_m3u_2018.pdf
    • https://cdn.shopify.com/s/files/1/0434/5951/0424/files/34369761295.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/17385871908.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/80892009440.pdf
    • https://cdn.shopify.com/s/files/1/0430/9365/5716/files/54967541306.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/48373723399.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/onan_rv_generator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2384/2983/files/favatabezawadu.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
stream_005_off00009154.bin
c417686c4c7b2b8ce5f05ca1d60fd2956347cae4f4404a4ba69d2a50bfc24259		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9154 23372 bytes
font_00_sfnt_off00005822.bin
22c656a1cac1b191515d5f029f868e381d96959a6177d252293635e98def22e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5822 5212 bytes
font_01_sfnt_off000069d6.bin
5b27883ccea9a383523e5efc2dc1b0f4bdc013a1180a5cb82fc86c36a10210cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D6 12820 bytes

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