PDF malware analysis — malicious · 7b8db7a9e57979e1

MALICIOUS

PDF

34.9 KB Created: 2021-07-10 00:30:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14

MD5: b1284204b146279f3bc342cb4287a41e SHA-1: 0ef61f37f7e21c9c94d14c225020ce1d7b8c71ff SHA-256: 7b8db7a9e57979e18c2c458b9a66a371cf6d264906db9af3dbdc784d390bd7e4

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics suggest a lure to download game-related hacks or generators, which is a common tactic for distributing malware. The presence of embedded URLs and the nature of the lures indicate an attempt to trick users into downloading and executing a malicious payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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 http://netcdn.tw/app/406889139/hack-coin-master-apk-2021-game-hack In PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-tix-generator_GM431946152.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
- https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
- https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/robux-place-rewards_GM431946152.pdfIn PDF document text
- https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/best-hacked-client_GM479516143.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
- https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/oprewards-robux_GM431946152.pdfIn PDF document text
- https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
- https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/andi-robux-free_GM431946152.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/play-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
- http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000323e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x323E	22612 bytes
SHA-256: `952663c85c56b7d2dd4504b04f3d985a1fc10324c9d0cf3ce29438fd75e51e9c`
`font_01_sfnt_off000064b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64B2	18580 bytes
SHA-256: `3c3cf7eb91a8d1db8b949631b859383b7a8b09fda1b6109b288380fe52f4b0e1`

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