Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab07750dd790b2cb…

MALICIOUS

PDF

48.3 KB Created: 2021-06-09 11:52:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a36e0b12072db355dd107008b0c0fea5 SHA-1: 42ac00ba004210cd1342d9396df54a0bec0eb1e0 SHA-256: ab07750dd790b2cbaa56a64568a77b5bb29d8e05791a5a03935203c9eedb3044
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures for game hacks and generators. The primary URL leads to a known malicious redirector, which likely serves as a gateway to further malicious content or downloads. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/hack-work-at-a-pizza-place-roblox-game-hack In PDF document text
    • http://berntfoto.dk/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/dowload-roblox-for-pc-free_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-download-nonsense-diamond-hack-roblox_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-for-kids_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_off00004ed3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ED3 26436 bytes
SHA-256: 34fd4153fb1ad096251ff40a5e3052a41b670e2431b6673f17542d629a7ff4c0
font_01_sfnt_off00008bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF4 3632 bytes
SHA-256: db69ab27b8cee85d24b3ed501b737d1cf6bca8b95b0f556676dc07546eeb317a
font_02_sfnt_off00009810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9810 18840 bytes
SHA-256: 44c9cff625cd034da738288957a1d1997a32c10792cb7ca1034af6cfcf027220

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