Malicious PDF — malware analysis report

Static analysis result for SHA-256 50614c8577cdd571…

MALICIOUS

PDF

57.0 KB Created: 2021-05-15 06:15:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 35b77032473c00cc4da429d32a598d7d SHA-1: 48758e52b1997f9e6971819880a8772208534035 SHA-256: 50614c8577cdd571445398bafcde6774234698616d36f8d5e98da9a226569fce
160 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a 'game hack' generator, a common lure for users seeking cheats or in-game currency. This lure is associated with malicious redirector infrastructure, indicating an attempt to trick users into downloading or visiting a malicious site. The ML classifier also flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8254

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.xyz/app/406889139/coin-master-daily-free-spins-link-2021-game-hack In PDF document text
    • https://www.alarqam.ae/userfiles/files/earn-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/best-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/links-to-get-free-coins-in-coin-master_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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004dfb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DFB 26340 bytes
SHA-256: 7c083634965771edd72a768299870e8d662b2a9373fb9bfe8bc42b81cebd3be9
font_01_sfnt_off00008b7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7D 3872 bytes
SHA-256: 2bb70407dc78b456db55001b4924565241c735d4b96ff1fb3ac3b335fb3132e4
font_02_sfnt_off00009915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9915 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000ac3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC3B 18880 bytes
SHA-256: 4ccb81aabfc378a65bbb004da1df6276046c1b1923188410bd025f5007717b79
font_04_sfnt_off0000d027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD027 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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