Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4a69958cdfe2be4…

MALICIOUS

PDF

43.8 KB Created: 2020-08-24 02:24:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7acec2436c64a0362a7da01f261a217 SHA-1: 4b433da99858c42ecd558022f199f9323f204835 SHA-256: c4a69958cdfe2be4ee863084b21acd34251ce73906394aee1d64bd9e8ffbf298
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a redirector URL, which is a strong indicator of malicious intent. The document body, though partially garbled, includes the text 'Ing apps not working android' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a large number of external PDF links further supports the classification as a link farm, often used for SEO poisoning or to distribute malicious content.

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=ing+apps+not+working+android
    • http://zalajodom.inflyteentertainment.com/uploads/1/3/1/6/131636927/f32b5c2cf1a446.pdf
    • http://files.nducuwangugi.com/uploads/1/3/0/9/130969555/gimuviri-megatanizus-selusifo.pdf
    • http://topaguro.happypathmeadows.com/uploads/1/3/2/6/132682883/nexekal-pusoropalenura.pdf
    • https://cdn.shopify.com/s/files/1/0435/5732/2903/files/daludurolimoled.pdf
    • https://cdn.shopify.com/s/files/1/0437/6880/7578/files/recuperare_chat_whatsapp_cancellate_android_senza_backup.pdf
    • https://cdn.shopify.com/s/files/1/0440/5395/4710/files/26984275214.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dijev.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/anthropogenic_factors.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/21687658680.pdf
    • https://cdn.shopify.com/s/files/1/0433/5268/6742/files/13418286519.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7804/files/zomidozekebuvepedozepobem.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/7032126455.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_off000060e9.bin
d881e89ff6658ea1877ce3a47a6fe52ce910e117221a9c5042c8624281ceb00b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E9 4856 bytes
font_01_sfnt_off0000717a.bin
b2f66ae17e2177c3ae18adcd0db55b75c12d5a266d67ae677a4fe9b3c4f65a35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x717A 10192 bytes
font_02_sfnt_off0000945b.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x945B 4324 bytes

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