Malicious PDF — malware analysis report

Static analysis result for SHA-256 607175ec882a09ec…

MALICIOUS

PDF

43.6 KB Created: 2021-06-02 14:58:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4554801b0043eff093fad38de3c93029 SHA-1: a50ac324098c0ea946ba4292118c879ebf276ee7 SHA-256: 607175ec882a09ec48bce38097a7f81f50579ba54374ae349f2218a5b57244fb
260 Risk Score

Malware Insights

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

This PDF document contains multiple links designed to appear as free game hacks or generators, with a primary redirector pointing to a credential phishing lure impersonating Microsoft. The document body and embedded links suggest a social engineering tactic to trick users into clicking malicious URLs. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/how-to-get-roblox-clothes-free-game-hack.
  • 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/how-to-get-roblox-clothes-free-game-hack In PDF document text
    • http://arkivthy.dk/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://arkivthy.dk/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://arkivthy.dk/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-i-cheated-for-this-box_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/games-that-give-you-free-robux_GM431946152.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_004_off00004de1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DE1 25008 bytes
SHA-256: 6c60543bea0305e42c83ac8df0dd8b6a3ce9925019c8348fcd8aebe3b29a8e1b
font_01_sfnt_off00008765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8765 18384 bytes
SHA-256: f499fe8cef3ca77379e6f20ebf3fa7b53640c57369361a3ea74493ab17a56294

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