Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e30b1773312d9d2…

MALICIOUS

PDF

46.9 KB Created: 2021-06-02 21:58:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 427e55c22075eaa12cad8f5ec198c48a SHA-1: 7cc97bfdf933ff24ec5e5c7e3fd0caf5d7f59a98 SHA-256: 6e30b1773312d9d268be6e87707898df2b6662774feae5d8221f18370370a9a8
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free Robux and game hacks. The document body, though partially corrupted, contains text related to these lures and references the malicious URL. The presence of embedded URLs and the nature of the lures strongly suggest a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 5

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/robux-generator-online-free-game-hack In PDF document text
    • http://asiasieja.pl/images/make-free-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/pokemon-go-free-30-ultra-balls_GM1094591345.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-hack-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005062.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5062 24892 bytes
SHA-256: a80b48dff647c2f0a959622db0c131fa9b3b01b9fbfa03f3418be816abea9ddf
font_01_sfnt_off0000898e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898E 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000939e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x939E 18540 bytes
SHA-256: e6033f55d65414b436364210aab7c2201adc278331c7cd5100baca7cb1638970

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