Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbdb46a7203b226…

MALICIOUS

PDF

44.5 KB Created: 2021-05-19 14:20:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a679b37b4c9354063eb1ae116503c6c9 SHA-1: e174826e2695996494a1160ed4518bf33c0509bc SHA-256: afbdb46a7203b226f5f4d8a502e8fff3f1a656f04eaaf5eb5f91f2f867f2a18d
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as a "free generator / game hack" lure. The document body and embedded URLs suggest a phishing or scam attempt to drive traffic to potentially malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/hack-coin-master-free-spins-game-hack In PDF document text
    • http://hospitalsalamanca.cl/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/rbx-com_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/pokemon-go-free-yanmega_GM1094591345.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47DD 24404 bytes
SHA-256: 1808d353bd868185deebf245c986ecae9803caccc959985b7d91fdfd11b5f74d
font_01_sfnt_off00007fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FAC 3480 bytes
SHA-256: 094dd0a0e5277ad3fac8c9ca7260e78f3cbfe09bbc23d6d8ea3c4bd1b8532ae4
font_02_sfnt_off00008bf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF0 18056 bytes
SHA-256: f90826bfe2bc71c0265d319a9184b169c06436e7d3915f152a6a7ecd0e51099f

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