Malicious PDF — malware analysis report

Static analysis result for SHA-256 b53a05681e61b468…

MALICIOUS

PDF

51.6 KB Created: 2020-08-19 19:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b108b24f985e1e7ab6d6db8d97c57e38 SHA-1: 46601eecc06ab3409bc34db91974aed8fb073cf3 SHA-256: b53a05681e61b468e70baf32eecbcb08618668f44784c84ec34080fe6cd92464
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.ru, which is also present in the document body. Additionally, a PDF SEO link farm heuristic indicates the presence of numerous external links, many hosted on cdn.shopify.com. The ML classifier strongly supports the malicious verdict. The primary attack pattern involves luring the user through these links, likely to a site that serves further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=azar+modded+apk+unlimited+gems
    • http://bovaxad.audreylewisinteriors.com/uploads/1/3/1/4/131483492/bojukujogik_noruxepewiloma_mimixozizokobir.pdf
    • http://salopoz.starseedallianceinternational.com/uploads/1/3/2/7/132712615/bitilugezuv.pdf
    • http://files.magnoliachapter14oes-pha.com/uploads/1/3/0/8/130813330/sowoxufuzizok-vijivofulas.pdf
    • http://pizar.midsummersoundcompany.com/uploads/1/3/2/7/132740449/jivalowepowojel.pdf
    • http://jukuji.wellingtongrillcolorado.com/uploads/1/3/2/7/132740373/9520034.pdf
    • https://cdn.shopify.com/s/files/1/0433/8673/2707/files/gobodejenavuw.pdf
    • https://cdn.shopify.com/s/files/1/0445/3302/2879/files/jetazagefi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3125/7510/files/soal_dan_jawaban_akuntansi_perusahaan_jasa.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/50300041390.pdf
    • https://cdn.shopify.com/s/files/1/0437/6782/4533/files/bunefijegetenopafofap.pdf
    • https://cdn.shopify.com/s/files/1/0437/1415/0553/files/basics_of_anesthesia_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/fuxenezogeremutimenamus.pdf
    • https://cdn.shopify.com/s/files/1/0429/1071/1971/files/xulerisefuwuluva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0877/7637/files/sajapusuvaxedasulokite.pdf
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/suxonuleropuraziresew.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/wibaludumejew.pdf
    • https://cdn.shopify.com/s/files/1/0432/7456/7843/files/pexadominodudiwememal.pdf
    • https://cdn.shopify.com/s/files/1/0433/8355/4202/files/98189038668.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_off00006a2f.bin
49a88307e57008ebdd6e46d585ba5949675c17584073400cca22ac8feb8b5170		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2F 5384 bytes
font_01_sfnt_off00007c64.bin
409ee9a3885541ffdc58d6bd2d6bfd260a46de59e4270c8c7780dd2af6cdbafe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C64 1964 bytes
font_02_sfnt_off000085bd.bin
c1378a1080f0b6e3dc6618fe5591eb56f9af2f88b013c9a06a5cfb7bb2ac104a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85BD 10128 bytes
font_03_sfnt_off0000a8ae.bin
7fb668a7946ad93d45c8d8c1b3f39f677756563650ad01c19c5231c1499fa852		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8AE 17384 bytes

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