Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cae2e2947d90b3b…

MALICIOUS

PDF

44.3 KB Created: 2021-06-08 23:03:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0c264ca575704c0ce2d46e5f0c6c5447 SHA-1: 9dfcbaed3d3ed2e4c5d4cb7124aff4ed64b197ef SHA-256: 6cae2e2947d90b3b9c3f3da222538d192d334d9970dc24957932382a73019253
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks or free currency generators. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The document body, though partially corrupted, contains references to these lures and embedded URLs, reinforcing the malicious intent. No scripts were extracted, but the primary attack pattern involves social engineering through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/raviz-cheating-roblox-game-hack In PDF document text
    • http://sbm-nn.ru/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hack-script-walkspeed_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-2021-apk_GM406889139.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
stream_004_off00005040.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5040 24592 bytes
SHA-256: 5da3086a476330d9630659a188b8bac226ce5e64593438de97cb78c7e183b983
font_01_sfnt_off00008888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8888 18884 bytes
SHA-256: 50941a5c654b7c543375554357e5633ff74acda88ebd077601673ba88bf8919a

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