Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0914529983f5279…

MALICIOUS

PDF

33.6 KB Created: 2021-06-22 01:37:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d45d4c6a0a855f768d30793346795853 SHA-1: 18d8f759fad29aa11a020a395abb42ec9e1024be SHA-256: c0914529983f527900365f71662236e08a8d6895c3a626391916ace17bf5a518
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are presented as cheats or hacks for popular games, indicating a lure for users to download potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.co/app/431946152/cs-go-roblox-wall-hack-game-hack PDF link annotation
    • http://sv-nahetal.de/images/robux-hack-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/identifty-fraud-roblox-maxe-1-cheat_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-cheat-your-values-in-roblox-boxing-simulator-2_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-robux-for-free-on-roblox-easy_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-robux_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-robux-with-fakename_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
    • http://sv-nahetal.de/images/paste-bin-dab-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/v3rmillion-roblox-exploits-noclip-free_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C51 22748 bytes
SHA-256: 138f85f6265069dd2c323282bc43375e8d675189ef1c45d5c5bdeade736968bb
font_01_sfnt_off00005ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC2 18852 bytes
SHA-256: 83fc5310a9784ab8ac67bfec45d1ee068dd24e3000b3a188365f84be2a979e1e