Malicious PDF — malware analysis report

Static analysis result for SHA-256 cca324ccfcf017ed…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 15:00:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fe4d211f65d1c2c71b45c7f2f1babe78 SHA-1: 6a6131a05f97e1aedfb831c9b3605bb9bad3c923 SHA-256: cca324ccfcf017ed22d701ad9fc2e4e9637702112b2b4d39da7ce8e99a257161
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as free game hacks and generators. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which is a common social engineering tactic. The presence of multiple malicious links indicates a high likelihood of leading the user to a malicious payload or phishing site.

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-coin-master-spins-blog-game-hack In PDF document text
    • https://repository.umgo.ac.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-sexually_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-download-for-pc_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_003_off000049e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E4 25512 bytes
SHA-256: e6cd858c8aa1319987be6a530e98739b3da803971ac1deec485fc1a1f769690a
font_01_sfnt_off0000836d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836D 18464 bytes
SHA-256: a2c76306a813766f02d16bba13a6176cc917de49c90529db8e6e2ffa1e8149db

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