Malicious PDF — malware analysis report

Static analysis result for SHA-256 de9fcf5258909679…

MALICIOUS

PDF

40.0 KB Created: 2020-08-15 06:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d1a26d52729b4ee24b754abfd2944b2 SHA-1: d4ea5c1a27c2c07afa5ff1718d9686edcf3399f6 SHA-256: de9fcf5258909679d037c87856cdfde3bda0010db4d97994488803e2f2fed61c
130 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link and a large number of embedded links, suggesting a link farm or phishing attempt. The presence of a call-to-action phrase further supports the lure. The primary malicious URL identified is ttraff.ru, which redirects to a Spotify APK download lure. The document body is heavily obfuscated but contains the malicious URL.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=spotify+apk++gratis+pc
    • http://files.haleluyah.net/uploads/1/3/1/4/131454304/eed5cbe588.pdf
    • http://files.anjaliyogact.com/uploads/1/3/0/9/130969543/befinikukijixuz_lowidajaxudev_femeti_bapenuje.pdf
    • http://files.mothermoon10.com/uploads/1/3/0/8/130874317/xanesijojanevudenude.pdf
    • http://mafiligu.yooin.studio/uploads/1/3/1/3/131381135/lemole-latonudozena-gefojejo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/bridge_to_terabithia_whole_book_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0450/2500/1630/files/map_of_africa_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/1955/8299/files/logitech_gaming_software_scripting.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8723/files/47869619585.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7780/files/capitalism_and_slavery_free.pdf
    • https://cdn.shopify.com/s/files/1/0458/5426/1401/files/analyzing_poetry_worksheet_elementary.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33540287451.pdf
    • https://cdn.shopify.com/s/files/1/0431/2173/7882/files/classifying_numbers_activity.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/valoj.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_off00005dec.bin
fb3d071428ef58de036baac7dbd8b9887f4ec9d78426f080d67e37f3b8c45856		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEC 5420 bytes
font_01_sfnt_off00007076.bin
821cadad51982e36c47683e8068028b9e07744617f4b88ba0640aae28dde0a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7076 10320 bytes

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