Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db226251eace066…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 22:17:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5c3fe06846b3e30f54dba4680aa5ceb3 SHA-1: a1b31546463ad228ca2d19e09c4c989a7dcc6a56 SHA-256: 2db226251eace066f789426403d8bcc5a855e1b9f9fbb50bf4ce02ec250976a0
300 Risk Score

Malware Insights

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

This PDF document employs social engineering tactics, specifically a 'ClickFix' lure, to trick users into executing commands or visiting malicious links. The document body and heuristics indicate a lure for free game hacks and currency, directing users to a known malicious redirector infrastructure. The presence of numerous PDF links suggests a link farm or SEO poisoning attempt to distribute the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • 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.
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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 http://netcdn.co/app/431946152/gg-robux-free-game-hack In PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/cops-and-robbers-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/vip-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/jailbreak-roblox-code-speed-hack_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/http-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/game-guardian-roblox-invisible-hack_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/rbx-free_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/free-spins-coin-master-links-twitter_GM406889139.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_off000031ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31AD 22136 bytes
SHA-256: 11c3bf83f4c53ed386fa13b94acc5551615b460594d025953c63f1d0f135301a
font_01_sfnt_off000062e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E5 18716 bytes
SHA-256: f741fb67302435bc2fe9223c274e0b4cc87fd97e57348d449a22a8b107b24b26