Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f08d97c0f8eb91d…

MALICIOUS

PDF

53.8 KB Created: 2021-06-09 07:34:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: dd911f098e4d3e4adf1e322b7dc4ae1c SHA-1: 6ac4b9da02c15a00f5702389382c3c96eddf25bd SHA-256: 7f08d97c0f8eb91dbab66223177a07096de808041ffdba9f585a10349818f82c
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to a malicious domain, likely to deliver a secondary payload or phish for credentials. The lure of 'free Robux' and 'game hacks' is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9636

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.tw/app/431946152/free-robux-2021-september-game-hack In PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/exploit-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-that-actually-works-2021_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_off0000556d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x556D 26088 bytes
SHA-256: c30d5f34f16172c6be8199e44314e9e25006e102890c9a36f85e9333f8b44e85
font_01_sfnt_off000092c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C8 8252 bytes
SHA-256: 7ebedd6b182173c8e55836cb0d114b2c4a0ac85c96a51b9f0706c935f8415fea
font_02_sfnt_off0000addd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADDD 18956 bytes
SHA-256: 3016fa477a10a7af622e7c1aaa02e208ec88c50187f82a9024280c7079871a1e

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