Malicious PDF — malware analysis report

Static analysis result for SHA-256 1168d7b606f4a05f…

MALICIOUS

PDF

41.4 KB Created: 2021-05-11 06:15:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3c23fbc9288c7210831e337ba21aec3a SHA-1: ae00aad8ccc71096e6994efcd64d4a5c44c2d5b8 SHA-256: 1168d7b606f4a05fa1f9eca486ac13698ba08228f37e321b83370dc727138f76
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirector infrastructure, specifically advertising free game hacks and currency. The document body and embedded URLs reinforce this lure, suggesting the primary goal is to redirect the user to potentially malicious websites. While no scripts were extracted, the PDF structure and embedded links strongly indicate a social engineering attack designed to lead users to a compromised or malicious 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/431946152/free-robux-only-username-game-hack In PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/krnl-download_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-do-i-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-generator-for-roblox-2021_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
font_00_sfnt_off00004511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4511 24876 bytes
SHA-256: e63f5569778479ef2c413b9ad37d055955d647f866cb8213aedeab5790565501
font_01_sfnt_off00007d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D3B 18944 bytes
SHA-256: 70265b1ab56d97b784f4fe2fa404654962f548e46b6ffa550f521079ee450d9c

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