PDF malware analysis — malicious · 5e48be5071614d1f

MALICIOUS

PDF

45.4 KB Created: 2021-05-11 22:17:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: b714dde69c60ad8e918f070c62f24e41 SHA-1: 2ca16c86959838b16edf541a7a6d37ed4101bc38 SHA-256: 5e48be5071614d1fc451273d47e0df28169dbb5e50ffed09e0177dee7e82fd7f

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free generators, identified as a lure for malicious redirection. The document body, though partially corrupted, also contains URLs pointing to similar content. The presence of a malicious redirector link and the ML classifier's high confidence score indicate a high likelihood of this document being used for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

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.
Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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/roblox-free-printables-game-hack In PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
- https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
- https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/www-robux-com_GM431946152.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
- https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
- https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/can-i-have-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-unlimited-robux_GM431946152.pdfIn 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_003_off00004c19.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C19	25476 bytes
SHA-256: `b578a7d1093d130d96cb2278b5751b5e13a4a329d5b288a2cbba6a92fbb78e14`
`font_01_sfnt_off0000849c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x849C	2824 bytes
SHA-256: `94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4`
`font_02_sfnt_off00008e4a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E4A	18552 bytes
SHA-256: `b7813c1cf5855ff7333da4fa1e106f27e1bbe272df09c79a879bc8b995579971`

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