Malicious PDF — malware analysis report

Static analysis result for SHA-256 28115761116e9a95…

MALICIOUS

PDF

48.7 KB Created: 2021-05-13 06:25:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8099b9dea0f0650bb25bcf95d90ef159 SHA-1: 0e292a0af4b1af25cf0f4b82729791bd31e586dc SHA-256: 28115761116e9a9577a3c6180d9693746184711b8d4477e8d30afdbc7d53c97a
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, masquerading as game hacks or invoices to trick users into clicking. The primary malicious URL identified is https://netcdn.xyz/app/479516143/simplysarc-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at driving users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/479516143/simplysarc-game-hack In PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e17.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E17 25564 bytes
SHA-256: 956913af56226b8a9084c42a74b28a933a2bc858b75f416d2e27fddfdbba78c4
font_01_sfnt_off00008801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8801 3020 bytes
SHA-256: f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f
font_02_sfnt_off00009256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9256 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off00009c67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C67 18156 bytes
SHA-256: d1e3c8cc46daa8b4e8a3620fd036fa3afc0951971ec214e12238e772f71f3550

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