Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb6094313357f05…

MALICIOUS

PDF

57.6 KB Created: 2021-06-10 17:20:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: cc02414eb1eece0fb9f5d5d0857edbc1 SHA-1: 69892e5328e5d1be9392fa38b79ea6939663d586 SHA-256: 7bb6094313357f05c1e36560b61e514abfb10ad43b65fc003ee0d75720b712d6
84 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and a visual download lure, suggesting it is designed to trick users into downloading a secondary payload. The ML classifier also flagged this PDF as malicious. The presence of an embedded PDF with suspicious findings further indicates a multi-stage attack. The document body text, though partially corrupted, mentions 'how-to-hack-roblox' and includes a URL pointing to a similar topic, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7117

Heuristics 5

  • Secondary embedded PDF body has suspicious static findings high POLYGLOT_CHILD_PDF_STATIC_TRIAGE
    A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.tw/app/431946152/how-to-hack-roblox-buiding-game-hack PDF link annotation
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/robux-earner_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-hack-robux-with-inspect_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-robux_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/nametag-fornite-hack-roblox_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-roblox-groups-with-funds_GM431946152.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_007_off00008395.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8395 24968 bytes
SHA-256: 08bddc7d07d4e28209051ca53258000ceda7b887f54ddaeb02f1cf8996b1711e
font_01_sfnt_off0000bcac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCAC 19172 bytes
SHA-256: fc7c5bbe168b3f2814280310be80e8bf649a9e5cf61442d69bc863f985a8ab7d
polyglot_child_pdf_off000030cb.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x30CB 46480 bytes
SHA-256: 2101fa83fa5defaaf092eeeba7b0fa0e78378832f9174f85fd364c4d7653fc02

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