Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b0b743bd9ada34…

MALICIOUS

PDF

43.4 KB Created: 2021-05-16 02:03:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 87cc082157baa4d7bb05cd11923443b5 SHA-1: 6779ddf42f950690d9c0e33e351dba020ae59d14 SHA-256: 80b0b743bd9ada34197c854e0314ff480d7de8ba7ff76420058db8894af9014b
260 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF document contains multiple links to external websites, including a known malicious redirector, that promise game hacks and free items. The document body and embedded links suggest a social engineering lure designed to trick users into visiting these sites, likely to download malware or engage in phishing. The SE_CLICKFIX heuristic further indicates that the document may instruct users to manually execute commands, bypassing typical document security measures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 6

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.xyz/app/479516143/minecraft-free-version-pc-game-hack In PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-hack-download-android_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_off00004b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B62 27324 bytes
SHA-256: 0fe89253eda69a747f91b04a592483a4325a8398a5209bc111ea60e3d6538b53
font_01_sfnt_off0000884a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884A 18000 bytes
SHA-256: 596bbbc5b74f8f8d5f8cfb941eefd0324f2b497cb668fe7d549b39bc00e1e0cd

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