Malicious PDF — malware analysis report

Static analysis result for SHA-256 30416a1cefdde6d2…

MALICIOUS

PDF

41.3 KB Created: 2021-05-11 04:02:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: c094be0a1867aafa1d4bf27d31f975e5 SHA-1: a2440299379e00449215360835424f6f2a012bcf SHA-256: 30416a1cefdde6d24b501c6deb55adb267e9b8d42aa1e57a8dbe649bf1cc087f
220 Risk Score

Malware Insights

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

This PDF document employs a lure of free game currency and hacks, impersonating brands like Microsoft to trick users into clicking malicious links. The links redirect to known malicious infrastructure and IP-hosted PDFs, suggesting an attempt to deliver a second-stage payload or phish for credentials. No scripts were extracted, but the embedded URLs and redirector heuristics strongly indicate a phishing and potential malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/free-robux-2021-game-hack.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/431946152/free-robux-2021-game-hack In PDF document text
    • http://202.182.59.89/perpus//repository/how-do-you-get-free-roblox-money_GM431946152.pdfPDF link annotation
    • http://202.182.59.89/perpus//repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/real-roblox_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/roblox-girl_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/roblox-april-fools-hack_GM431946152.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_off0000453a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x453A 24852 bytes
SHA-256: ade02727f2540d2061e0ad68501fff0c599b046aa182fec25d7d4946dba9b323
font_01_sfnt_off00007e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E87 18416 bytes
SHA-256: a2c808792aaeb1607b9c3a91ae122c662faffffe8d42f3cf4118be6ccc5b3e7b

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