Malicious PDF — malware analysis report

Static analysis result for SHA-256 d098f25ce6a10966…

MALICIOUS

PDF

47.6 KB Created: 2021-06-13 22:55:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6006158f39c664f6b9bb332d6ae4ff7f SHA-1: 6c68f21f254f9cfb85afc15c820e327b98521f8e SHA-256: d098f25ce6a109666072f35b010c1449afeb7ce81958a0b4b93661a8be9d027c
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to redirectors and SEO link farms, with a primary lure related to 'free Roblox clothes' and 'game hacks'. The document body, though heavily obfuscated, contains a URL pointing to a malicious redirector. This suggests the file is designed to trick users into visiting malicious websites, likely to download further malware or engage in scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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 http://netcdn.co/app/431946152/free-roblox-clothes-wiki-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/robux-online_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/veil-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/mcpe-com_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-roblox-net-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/cm-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-robux-on-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F8 25292 bytes
SHA-256: 90fd66c25e94b25ea6aeac799579c5f9db4f513bf77c7cfa380509abb0eb8c95
font_01_sfnt_off000084c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C0 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_02_sfnt_off000096a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96A2 18708 bytes
SHA-256: c41f2aa357a45fcbee4f9061bd73510a082749202a7da9871a52472e2607f53c

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