Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc11b739fc2a158…

MALICIOUS

PDF

42.3 KB Created: 2021-05-19 05:18:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 219e23fde0d8cbadd68de0e37ef5c5e1 SHA-1: 6d41be34420052ef7f2d131ddac344d240f9795b SHA-256: 7bc11b739fc2a158001f6652e6703e56ce13a981be1712ca4733176f4db39306
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising a "game hack" or "free generator" lure. The primary malicious link identified is https://netcdn.xyz/app/1330123889/pubg-uc-redeem-code-today-game-hack. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely serving as a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/1330123889/pubg-uc-redeem-code-today-game-hack In PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/free-robux-group_GM431946152.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/pokemon-go-free-spoofing-ios_GM1094591345.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://elearning.man3majalengka.sch.id/__statics/gudangsoal/files/coin-master-cards_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004756.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4756 25364 bytes
SHA-256: eb4f010b5e501226d734df7632492025280c6d395bffaafb37ec43160d3051ff
font_01_sfnt_off00008132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8132 18880 bytes
SHA-256: 97fafda32911fa8aa7a926f63b5c5a5f351097cf6924b64109c3b7b143c4ce2a

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