Malicious PDF — malware analysis report

Static analysis result for SHA-256 e273004549b92555…

MALICIOUS

PDF

48.1 KB Created: 2020-07-27 09:58:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b19a0119388011c1363db4efc8161032 SHA-1: 3def72c3f9fde6df46f6321f617906368a94b9b9 SHA-256: e273004549b925558974254ba51a803db98bdc15739edf07b350d2049ea2b524
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is a known malicious domain. Additionally, it functions as a PDF link farm, hosting numerous links to other PDFs, likely for SEO manipulation or to distribute further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was unreadable, limiting the ability to determine the exact payload or further intent.

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.com/pify?keyword=numeros+romanos+del+1000+al+2000+pdf
    • http://files.victoriaghairdesign.com/uploads/1/3/1/4/131483110/somapul_fotaboko_bigevox.pdf
    • http://files.cdjff.org/uploads/1/3/1/4/131483305/6b99ac67.pdf
    • http://files.technicalfireanalysis.com/uploads/1/3/1/4/131453036/napiravotozu.pdf
    • http://files.cdjff.org/uploads/1/3/1/4/131483305/6b
    • https://cdn.shopify.com/s/files/1/0436/8980/3941/files/28462438893.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/gusewedin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72593533024.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdf
    • https://cdn.shopify.com/s/files/1/0438/6501/4437/files/jilaxekukigiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/1493563034.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/rinezarobunutidatelow.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1542/files/42914881856.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/80471678966.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/niwulirubezoxixafubixuza.pdf
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/welinasanozef.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_off00007a78.bin
25aad61ee7fd20e6692662fbd02203d5047a48947e385ce07e7ea9fc28b80562		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A78 5236 bytes
font_01_sfnt_off00008c26.bin
6ff843756f7c2dd255028b6f58ec7fe8ebe62a373da64ce9784a7b245ffb19c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C26 11636 bytes

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