Malicious PDF — malware analysis report

Static analysis result for SHA-256 df518e1b60b1cb59…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 22:33:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d06e88369d97dd4d00b5c36d78d3f5f3 SHA-1: 0493dbdf0f3f73468bd6febb0ae76080ba7fa900 SHA-256: df518e1b60b1cb593f5f6b5ed92e046931ea4e5e1597254a2b777756ac32097a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures for game hacks and free Robux. The embedded URL leads to a known malicious redirector, likely intended to download a second-stage payload or phish for credentials. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/free-robux-no-verification-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coins-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-35-13-hack-download_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50BC 29368 bytes
SHA-256: 6ed531cfc65f6c48a93e72bfbc457a1909afe6d86599d9e671dab3b4d5bf1abc
font_01_sfnt_off00009106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9106 18600 bytes
SHA-256: 361892a278de990f6dfe9fe9f512a0ec39aeba1740037781b92f32c6ad2b5051

Open this report in the interactive analyzer, or submit your own file for analysis.