Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd91ff2364863890…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 18:56:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7ce1e2a4c69f4125cd1ff500c2233f2e SHA-1: 30d426acb8742ce7931c5cc091d5c19e183a9208 SHA-256: fd91ff2364863890ad9faa6ba12e111f39b4346e2c3769bd2ad8cc1cb79f595b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a primary link pointing to a known malicious redirector. The document body, though partially garbled, suggests a lure related to game hacks, specifically for Roblox. The presence of a malicious redirector indicates an attempt to lead the user to a site that likely hosts further malicious content or phishing pages.

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/hack-to-get-clothes-in-roblox-game-hack In PDF document text
    • https://www.ak-oroslavje.hr/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-roblox-hats-promo-code-wiki_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/robux-hack-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/hack-emote-dance-roblox_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-hack-username_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-hack-100-type-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-hack-roblox-money-with-cheat-engine-63_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/in-roblox-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/five-nights-at-freddys-tycoon-on-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/musical-chairs-hack-roblox_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
font_00_sfnt_off00002f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F71 22312 bytes
SHA-256: dae12e1ecbb56bfd6b05384b37c251c0dbf1face84d1aef1cff7d9b25fd4dc7f
font_01_sfnt_off000060f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F5 18928 bytes
SHA-256: 4d8a8af38dc60b793431c4c6b154396e61081babf29454c48b8719c686a03f18

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