Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d67a48dfbd8449…

MALICIOUS

PDF

47.2 KB Created: 2021-05-30 23:16:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 03e1208b434c2ee5b798735e720471a7 SHA-1: 36219c8de8114e25814d780b845f5b83837e866d SHA-256: 32d67a48dfbd8449c14d1ec19d7849a66f15c1748829033cb99b86c9fab9d61e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links designed to lure users with promises of game hacks and free in-game currency. These links redirect to malicious infrastructure, specifically identified as a redirector. The document's content and embedded links strongly suggest a phishing or scam attempt, likely to lead users to a compromised site or download further malware. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7900

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/i-got-hacked-on-roblox-game-hack In PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-verification_GM431946152.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_off00004f0f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F0F 25312 bytes
SHA-256: 4c356beb09adfb8da67b853e022c96e9ef96a6a31bfd3f1784f3c33c8db89f4c
font_01_sfnt_off000087e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E8 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000948f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x948F 18460 bytes
SHA-256: a8a49c36ef4b2531a5f792820ad3efe99a39c3e474aae1f279e7d577006455a1