Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b2aa648a8b03749…

MALICIOUS

PDF

46.1 KB Created: 2021-06-07 14:02:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 32b09a49dbce899924a727accbbabff7 SHA-1: aafd713d515fa8c1107c1df7b067ca9eae483e0f SHA-256: 1b2aa648a8b0374987762098585bb19133cff89eed299eda58ea193a364a5be8
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack lure, redirecting to known malicious infrastructure. The embedded URL and the document body text both point to this malicious redirector. While no scripts were extracted, the nature of the lure suggests an attempt to trick the user into downloading a secondary payload or visiting a malicious site, aligning with common phishing and malware delivery techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/cheats-to-get-cars-in-car-crashers-2-roblox-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/get-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-generator_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/pokemon-go-free-legendary-pokemon_GM1094591345.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/reddit-coin-master-hack_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
stream_004_off000052c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52C5 27164 bytes
SHA-256: bbd8e7ac2f7f626fe797746661b32a40fa84c8605d92534af6fa50bc895c3656
font_01_sfnt_off0000911b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x911B 18408 bytes
SHA-256: 49b5a9144048eea6aca0144b2980af3afec9df3fd277073d9e89dfee79fdd7d4

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