Malicious PDF — malware analysis report

Static analysis result for SHA-256 61f39431387ec608…

MALICIOUS

PDF

48.5 KB Created: 2021-05-10 16:35:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bafbc56f19073efa22e887a0e851f479 SHA-1: e951810545a774b09b47beb938ad0dad737c17a5 SHA-256: 61f39431387ec60811b849cecab0afcdc7c604b79c09f5be9c2c98c38a58b729
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector, under the guise of providing free game currency or hacks. The document body and embedded links suggest a phishing or scam attempt to lure users to malicious sites. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/431946152/how-to-get-free-robux-on-roblox-2021-game-hack In PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/ww-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-game_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-source_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/static-moonactive-net_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/daily-spin_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-generator-for-kids_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a95.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A95 28548 bytes
SHA-256: b588168cdbcc1c08a936fd823da5a3c1a3f836b8fd8083739c126dae0a5d825f
font_01_sfnt_off00008cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB3 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000099c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C4 18756 bytes
SHA-256: 57ee29ca2df633c9559bea9da81b447a7ef2e0dffb4d388bdd233aaad46b31ec

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