Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1d997346e23d37…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 10:00:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bad9101eac5dc40bde2b3cedede80ae5 SHA-1: 3f1e97b2a89292676a480f4cdbaf4a2cfddddea3 SHA-256: be1d997346e23d37268c67e302b914d04c25a14e922aeace6e89ae3064b644c1
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The document body and extracted URLs strongly suggest a phishing or scam attempt, aiming to trick users into visiting malicious sites. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious workflow designed to lead users to potentially harmful content or further compromise.

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.
  • 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
  • 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.online/app/406889139/get-free-spins-on-coin-master-links-game-hack In PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/prison-life-roblox-hacks_GM431946152.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
stream_004_off00004eed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EED 24876 bytes
SHA-256: 29b75f91b0a59b4e8ec359277c50c8e2c6e97e8142cfbebd347cc277968f3a4a
font_01_sfnt_off000087d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D1 18056 bytes
SHA-256: 4b724ee49242e9c8465e3a985e2896a04a7babff1c2e883c4eb2adcfe8b67358

Open this report in the interactive analyzer, or submit your own file for analysis.