Malicious PDF — malware analysis report

Static analysis result for SHA-256 d885a5ee0490ba33…

MALICIOUS

PDF

42.1 KB Created: 2021-05-30 22:18:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d0dd161251e514dfb34dbf307bb51980 SHA-1: af54d437a533a5ef3e0540f7f970cad22dc98609 SHA-256: d885a5ee0490ba33b94602e000567d7d230c543684ebad2f32c48758a8d32176
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as free game hacks and generators. The primary link directs to 'tiktok-viewer-free-game-hack', which is associated with malicious infrastructure. The document's structure and embedded links suggest a phishing or social engineering attempt to lure users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9500

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/835599320/tiktok-viewer-free-game-hack In PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c6c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C6C 23916 bytes
SHA-256: b2a1dafb45cdb8fae9754ac0f5eea5f725bf767a427ec5334a43185e69772c95
font_01_sfnt_off000082f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F2 17752 bytes
SHA-256: 03cae80738042903ed7303e5923c2b1ca7393d04b72c6adefe1e53c55c9a8aab