Malicious PDF — malware analysis report

Static analysis result for SHA-256 0efae814e4141507…

MALICIOUS

PDF

46.6 KB Created: 2021-05-19 09:00:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: f0f2a9b52a0b7a50b65a367f26d2106b SHA-1: 52cd729278980a42816bdeda3b29a6281a83f1db SHA-256: 0efae814e4141507a630f708cf8777ebc9e7737475647bf4fc6923f0456d6e0e
188 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator / game hack' lures. The document body, though heavily obfuscated, contains text related to 'Free Robux No Verification 2021 Ios' and includes URLs that likely lead to further malicious content or phishing pages. No scripts were extracted, but the primary attack pattern involves social engineering through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/free-robux-no-verification-2021-ios-game-hack In PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/earn-robux-websites_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/pokemon-go-free-balls_GM1094591345.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-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.

FilenameKindSourceSize
stream_003_off00004a0e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A0E 26452 bytes
SHA-256: 6976f8bc29203ef52812076d08fd63c8cc3049c4ccd6ac189f02aeb00069332c
font_01_sfnt_off000087b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B4 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00009164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9164 19004 bytes
SHA-256: 57c461ba4099b7c3a729e07f809cac2bd0540fe115d61d2f21d5ca70446f19e8

Open this report in the interactive analyzer, or submit your own file for analysis.