Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ab356dd900fd0e…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 11:32:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b849f298dadf13b35123232c173653a1 SHA-1: 5283b88c7a3193c7f20bd301888ab6fad4a8990a SHA-256: 70ab356dd900fd0e260caa455545888d6f45bde292b3fd41b5b9efd131f2ade5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and free spin generators. The document body, though heavily obfuscated, contains references to these lures and the primary malicious URL. The presence of multiple redirector links and the ML classifier's high confidence score indicate a strong likelihood of malicious intent, likely to lead the user to a site that downloads a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-spins-coin-master-facebook-game-hack In PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/coin-master-cards_GM406889139.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/websites-for-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/roblox-images_GM431946152.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004994.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4994 23944 bytes
SHA-256: 64e442f85e4e556c843032a875a56784f107ae15fbf28ca0cfb0aab541e1e3aa
font_01_sfnt_off00008062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8062 18212 bytes
SHA-256: 50de993b58e9e37548682fab5b814d15972a3e6e828789899a8bd37e3a77ebbf

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