Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad67b9c85acb7d5…

MALICIOUS

PDF

38.4 KB Created: 2020-08-20 05:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c48b3468e9e0507f8e94527c577770b SHA-1: a0e03efe948ac3bd59933f0bb32df92edda0abf3 SHA-256: cad67b9c85acb7d50d3b43feec1a5b2e636dd2f7ae4c9a060cbc92c1dd78fd90
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=hd+wallpaper+nature+new'. The document body suggests a lure for 'Hd wallpaper nature new', indicating a social engineering attempt to drive traffic to malicious infrastructure. The presence of a link farm heuristic further supports the malicious intent of distributing links to potentially harmful content.

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=hd+wallpaper+nature+new
    • http://nijad.covenantlutheran.com/uploads/1/3/1/4/131453416/vogaxogibe_satumumajew.pdf
    • http://files.automobiliabybuck.com/uploads/1/3/1/6/131607029/metutozigami.pdf
    • http://files.jacquelinetopakian.com/uploads/1/3/1/0/131069961/fobojexaje_ximixino_koziditef_rokivif.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/gijusidubiwivodesa.pdf
    • https://cdn.shopify.com/s/files/1/0437/3040/3477/files/44872431769.pdf
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/97181443988.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/tudozowaxil.pdf
    • https://cdn.shopify.com/s/files/1/0438/4446/8898/files/pogomeriwaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/8315/9957/files/jezavevow.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8117/files/5758231450.pdf
    • https://cdn.shopify.com/s/files/1/0452/5654/0317/files/sslc_english_synonyms_and_antonyms.pdf
    • https://cdn.shopify.com/s/files/1/0431/0948/2658/files/gasobatavowenozasavebi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/gulikix.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_off00005a08.bin
6e511ff3f9912d3c95c39f8e5e90d001b9cfdbb39569be7354db0b93c10bfa2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A08 4828 bytes
font_01_sfnt_off00006a92.bin
894e588c10538a2f2105d521c853701005cb570de8700de8c1246b768aad2736		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A92 10196 bytes

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