Malicious PDF — malware analysis report

Static analysis result for SHA-256 f818a694d1341085…

MALICIOUS

PDF

32.5 KB Created: 2021-07-01 17:33:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: c04a980e4e998841a71c070a5e077052 SHA-1: b78b8041ef40aab0ed95a7c192d1b6868db175c9 SHA-256: f818a694d1341085296459eb82af54a5e1ca82c3223a943db367f691690b2aa7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-free-robux-com-game-hack In PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/roblox-catalog-free-items-2021_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/pubg-uc-carding-method-2021_GM1330123889.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/pubg-uc-to-pkr_GM1330123889.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4A 21384 bytes
SHA-256: e2caf70df0223383a8cbbd3833ddca71ae38fe8f086073de56b6ad88dec12f19
font_01_sfnt_off00005a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1F 19052 bytes
SHA-256: 3ade0644b03576c953d7fa07027ec2051297089046835a88cadcb08e5c593426

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