Malicious PDF — malware analysis report

Static analysis result for SHA-256 0355d90ae6ebfde5…

MALICIOUS

PDF

39.7 KB Created: 2021-05-21 11:01:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: aa9ae2a2912ca79b4c5fa296881e38e2 SHA-1: 4988a09bfe9fd1ea57998117bd4d305cfdb4d310 SHA-256: 0355d90ae6ebfde57f3753d971b9295c5125c7634ce707a75028f4556a9ad08c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one pointing to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for game-related cheats or generators, which redirects to potentially malicious content. The presence of embedded URLs and the nature of the lure suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/479516143/minecraft-hacked-client-download-game-hack In PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/coin-master-400-spin-link_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/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.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
stream_002_off000035c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35C9 25192 bytes
SHA-256: c81372f1d695e734edd86892ea3e1f202191c910cd1410f586e4c24441825fb1
font_01_sfnt_off00006ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECE 3016 bytes
SHA-256: bd4c5227f40359bf6ee2a8c2794ec8f9dbb7abe19b7d5f3f220cb57dbcd1b6fa
font_02_sfnt_off00007943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7943 18460 bytes
SHA-256: e3089071acaa3d725dff62b6cfe00465db2477317d389ff23f6444401690c9a2

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