Malicious PDF — malware analysis report

Static analysis result for SHA-256 175cd422962606de…

MALICIOUS

PDF

49.4 KB Created: 2021-05-10 18:33:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e6f728cbc49b21360f58519b36c778ab SHA-1: 34e4889d28a7076b0e3579c6cf6305a214908ef7 SHA-256: 175cd422962606de0af1b31fb510c3269edc2f7c0d9230d43c0cf3742b4f29c2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 https://netcdn.xyz/app/406889139/coin-master-free-spins-blogspot-game-hack PDF link annotation
    • https://pustaka.staiyastispadang.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/daily-spin_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEC 25672 bytes
SHA-256: 39756fd198705d1f89009e365ac0dc076bcaaf387e422fbf8e18143eb5f8dfe1
font_01_sfnt_off000085ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85ED 4128 bytes
SHA-256: 94fcb381239c29100752ee892ac52c1bd3adfaf549c4fef32483ae1d5678ac02
font_02_sfnt_off00009411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9411 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E01 18464 bytes
SHA-256: 7f13c81e41627db5de1fdc011b77043c9877b216986226f08b9acd2eded814ce

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