Malicious PDF — malware analysis report

Static analysis result for SHA-256 be5d38f89ac7107d…

MALICIOUS

PDF

33.6 KB Created: 2021-06-30 03:32:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: dc57c1a602b71a58d2c84a9b38cbde55 SHA-1: 0938c61848d37913595cfe85636d88d3c6b8475b SHA-256: be5d38f89ac7107d36444b71a631965c2b8d367555f276d34dd724a003b7e125
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically advertising game hacks and free currency for popular games like Roblox and Coin Master. The document body and embedded URLs strongly suggest a lure to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted from this sample, but the presence of malicious redirectors and the lure content indicate a high likelihood of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/invisible-hack-roblox-2021-game-hack In PDF document text
    • https://deutsch-study.com/image/data/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/hack-para-assassin-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/get-robux-today_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/cheat-engine-how-to-destroy-a-roblox-server_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/oginject-co_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-bobux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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
font_00_sfnt_off00002cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD7 21952 bytes
SHA-256: c52eaa56651dba3ab4168647573196de930e5ee89f33fa0db764dcb49fc9c42c
font_01_sfnt_off00005d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D46 19292 bytes
SHA-256: cd81b05ea43457581c0fa4ce122cca23af9691c4525676d514b91e8b9a363858

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