Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffa70d499eb92756…

MALICIOUS

PDF

42.4 KB Created: 2021-05-19 13:12:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 4ef58c2f95dad6666e1a734bfd06ddbd SHA-1: 99ae4451f52518a318d4b41419a4424e845233f7 SHA-256: ffa70d499eb9275636333b376740da9c685931aaa7de8ef76011808086fff270
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The document body and extracted URLs strongly suggest a phishing or scam attempt, likely leading to malware download or credential harvesting. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, warranting a high confidence assessment.

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/1094591345/pokemon-go-free-promo-code-game-hack In PDF document text
    • http://make-up-stettler.ch/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/tiktok-free-hearts-2021_GM835599320.pdfIn PDF document text
    • http://make-up-stettler.ch/images/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/rewardrobux-com_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_off00004805.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4805 27008 bytes
SHA-256: 640f6e55c30a6a0010530da963dad1fe57d2abfd5d85a4fa2c487b597e52edb0
font_01_sfnt_off00008459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8459 18016 bytes
SHA-256: 54c0676719a22efa182782d1ab1253e926bb242dc0ec91eb4a685081c827b831

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