Malicious PDF — malware analysis report

Static analysis result for SHA-256 78d5b9e096bebe56…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 11:32:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9860ba57806da2eba5194a7213a0b510 SHA-1: cbcdba653f1d611079561613a4c613118e12e194 SHA-256: 78d5b9e096bebe5663a6a28eba52e6ab6a34a4b5ad1b4eb30577f4dd45f6cc8b
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to game hack generators and potentially malicious download sites, indicated by heuristics like PDF_GAME_HACK_REDIRECT_LURE and PDF_RANDOM_URL_LINK. The document body and extracted URLs suggest a lure for users seeking free in-game currency or cheats. While no scripts were explicitly extracted, the PDF structure itself facilitates these redirects, aligning with a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.online/app/406889139/coin-master-hack-unlimited-spins-apk-game-hack PDF link annotation
    • https://katalog.smkn1glagah.sch.id//repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/pubg-40-uc_GM1330123889.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-spins-link-blogspot_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
stream_004_off0000536f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x536F 24836 bytes
SHA-256: a06bf20555214fef774143d5f51737c4820f6bed5242f6b901b1c8b60fb0d2f4
font_01_sfnt_off00008bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEA 18584 bytes
SHA-256: 7ab6b6a2534dd61b41f41af0d2c6fad32de5c170167a104ad22e4ca4b978dbf2

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