PDF malware analysis — malicious · 0237eb058101678e

MALICIOUS

PDF

39.9 KB Created: 2021-05-21 18:25:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25

MD5: d6cb47e6122361f505e9f4c0bb55a781 SHA-1: d8e5133c4fe5f722d650be7c2565daf799869323 SHA-256: 0237eb058101678eb4c55d9852473c9d616bfd45fc9e06e8cf2b0fb00dcbf693

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and generators, a common social engineering tactic. The heuristic 'SE_FAKE_CAPTCHA' suggests the document may present a fake verification prompt to trick users into executing further malicious actions. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to potentially harmful content or downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.8015

Heuristics 5

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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/479516143/minecraft-pe-free-download-android-game-hack In PDF document text
- http://hcberg.com/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- http://hcberg.com/images/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
- http://hcberg.com/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
- http://hcberg.com/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- http://hcberg.com/images/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
- https://youtuIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off000035f1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x35F1	25648 bytes
SHA-256: `c980d4d7ecf69a8f55209419783369538f9f656ae2b4b8381173553e3bb6033f`
`font_01_sfnt_off00007009.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7009	2912 bytes
SHA-256: `02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f`
`font_02_sfnt_off00007a06.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A06	18444 bytes
SHA-256: `5a97249ab99b3f405ba8447d6660054b6d961bf679fd2328fdd0c5e86c70ec7d`

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