Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c0ed16595ec631…

MALICIOUS

PDF

44.1 KB Created: 2021-06-02 06:36:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: a0f0700cf185cbe693a7604287821bb4 SHA-1: adff3c8da6e4872822b977ba9e52a39d9ddff07c SHA-256: f0c0ed16595ec631df855ea51cbe3f24cc9727fa61741374af07de98a7c881f7
200 Risk Score

Malware Insights

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

The PDF contains a lure for game hacks and mods, directing users to a malicious URL. The 'ClickFix' heuristic indicates the document likely instructs the user to manually execute a command or open a link, bypassing macro restrictions. The embedded URLs suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://netcdn.xyz/app/479516143/free-minecraft-mods-game-hack In PDF document text
    • http://heilzentrum-ulm.de/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/pubg-74-uc_GM1330123889.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-robux-com-roblox_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
stream_004_off000051c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C5 25452 bytes
SHA-256: 7905d073691e76c090c1471c458a6e8fe7f62331a29d40aa583d1a63adf35015
font_01_sfnt_off00008afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFB 17884 bytes
SHA-256: adaa6c4c94b3243dd254ffbddf76305537cf905bb6459c29a6343236798c761b

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