Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e440b1d4526f172…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 00:30:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 541412eb4b263c0239beb96ed9f1fb05 SHA-1: 2403972833fffa9daccf7647b53f0773adc0a99a SHA-256: 7e440b1d4526f17278a603d0315309a1ecf33ac11806e1869a3b6475eedf62a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free Robux' and 'game hacks'. The ML classifier also strongly flagged this PDF as malicious. The document body, though partially corrupted, contains text related to these lures and the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-robux-2021-game-hack In PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/where-to-get-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-robux-hack_GM431946152.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_003_off00004b1a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B1A 24336 bytes
SHA-256: ca9329c500fe406bb1ac64f762768d0fd40e0a845d4654979bb856ec8805295c
font_01_sfnt_off00008320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8320 18416 bytes
SHA-256: a2c808792aaeb1607b9c3a91ae122c662faffffe8d42f3cf4118be6ccc5b3e7b

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