Malicious PDF — malware analysis report

Static analysis result for SHA-256 a06f9b0fd05829b3…

MALICIOUS

PDF

43.9 KB Created: 2021-05-25 10:07:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 631414fab7906a8d73c55a5490821085 SHA-1: 1f151f106280fe38710dbc62b888e00093061681 SHA-256: a06f9b0fd05829b392eea7fddb125c68bd1fd0e32b6963290f23e6e201494313
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics indicate a lure for 'free Robux' or 'game hacks', suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure strongly suggest an intent to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7281

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-no-offers-game-hack In PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-vip-server-roblox_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000036a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36A2 30088 bytes
SHA-256: 651331882d230838598b2cd16976d04852d9b0e03c0880142383e717fb9399c4
font_01_sfnt_off00007751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7751 5976 bytes
SHA-256: 2a4454395b675691a1469a3daa656a97b67bed177b2f007b9a3b04d1b90ba2b5
font_02_sfnt_off00008b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B38 18012 bytes
SHA-256: db6be32425767485114cb9000642ed63280f0807e0fe45793765b8e181fce2c0

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