Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b569a13848f95e6…

MALICIOUS

PDF

46.0 KB Created: 2021-05-13 08:32:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 687d6d3acd4ed112421b084e1c4220a9 SHA-1: 6ae9fcd7607630f99ef0d065355d3648c650c5be SHA-256: 1b569a13848f95e66e8970e8846a266a21be7a245abb23b3d029dee7490c847b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a primary link to a redirector disguised as a game hack generator. The document body and embedded URLs suggest a lure for free in-game currency or hacks, which is a common social engineering tactic. The presence of embedded URLs and the nature of the lure indicate a likely attempt to redirect users to malicious sites for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/how-to-hack-robux-game-hack In PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/microsoft-robux_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-robux_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b7b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7B 25604 bytes
SHA-256: 44c72c5924cdae8f28036f5c5226317bf0d7b8586de4e8e3f1a8171f56e70377
font_01_sfnt_off00008736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8736 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off000090d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D7 18412 bytes
SHA-256: 799ae8847f356c5b4d712fc876b96dd84d848442331064266ecb6e470ae97e62

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