Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0270e304777530…

MALICIOUS

PDF

41.7 KB Created: 2021-05-10 18:39:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5e5bdd893f3110c302aaa9b17443582d SHA-1: 43baae61487b735ceea70ef46fd3295b8d80f483 SHA-256: dc0270e30477753026512e9bd16f9f383ba1e4f3e37532237a2289803b186c17
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to a known malicious redirector, disguised as a 'free generator / game hack'. The document body explicitly mentions 'Free Coins Coin Master Haktuts' and includes a call-to-action to access a generator. This indicates a phishing or scam attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

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/406889139/free-coins-coin-master-haktuts-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003290.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3290 24668 bytes
SHA-256: 75b9df493b3c205f49d30bdbc339e101a182a5152e13315ea1ecd281fcc369ec
font_01_sfnt_off00006a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A88 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00007829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7829 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00008219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8219 18020 bytes
SHA-256: 885405c0f3c82632f67cbbf76e9de88f1d1af146284216a58ab90767d16be517

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