Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bd24850558c7b0…

MALICIOUS

PDF

44.2 KB Created: 2021-05-19 23:39:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 738dff844d1d2651ea885c5d48718ff7 SHA-1: 3f6f6bc01ca81173082a4fdcf19e937270b98540 SHA-256: 80bd24850558c7b02dc37ed5b4932bc27576c5a0e9f12a144884876fb69df1fc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising free game items or hacks. These links redirect to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body itself contains obfuscated text and URLs, suggesting an attempt to disguise the malicious intent. No scripts were extracted, but the primary attack pattern involves social engineering through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/835599320/tiktok-free-10-likes-game-hack In PDF document text
    • http://gomelavto.by/images/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/tiktok-free-video-download_GM835599320.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-coins-twitter_GM406889139.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_off0000450a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x450A 26724 bytes
SHA-256: 5e597734944510382a187ad1d7ce2da820b687d521de4bdc85a4e4ee02f14e90
font_01_sfnt_off000081de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DE 3124 bytes
SHA-256: d6dd29adb69da7f9a23a5e3791282a61e2f811794f560a0c409c8747766d9102
font_02_sfnt_off00008c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C97 17732 bytes
SHA-256: d3f724264e3985dc1dde7b9a63dbbf6387556dcda54e02681c1036ae3c3e2548

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