Malicious PDF — malware analysis report

Static analysis result for SHA-256 13a161845492c8ab…

MALICIOUS

PDF

46.5 KB Created: 2021-06-11 12:08:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 30352280470d0e824ed6b5b31ea5cedc SHA-1: 3c2fe6b136fae8253c3aab20b8368917c217e1aa SHA-256: 13a161845492c8ab56f620a08fe60ba8f64c1a2d6f98cf35c383b3b2bdfbf7df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators' as a lure. The document body, though partially corrupted, contains a URL that aligns with the malicious redirector findings. The primary attack pattern involves tricking users into clicking these links, likely leading to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • 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.
  • 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.tw/app/431946152/how-to-get-admin-free-on-roblox-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library/repository/robux-earner_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-cheat-codes-ios_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hacks-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-cheat-codes-to-fly_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/find-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5456 27136 bytes
SHA-256: 63ffcc09b20bed30e51501d9ff7b8226e2cadf23783797292b4da43d8b825754
font_01_sfnt_off000091fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91FD 18772 bytes
SHA-256: 04966e5612e1d4d18681adc6bbefe05a65d505a48b6b2bff3d8af87552fd8686

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