Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac02180b864ef575…

MALICIOUS

PDF

78.6 KB Created: 2021-09-17 01:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5ccc433008fe1679e1b7b462bf9cb576 SHA-1: 0e5f90e5af95585ba295c18f07b66f45d407c311 SHA-256: ac02180b864ef5751b547fe00356a96758bb43f31e1c77f6c1df5ae36e5bd790
110 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, indicating a potential for malicious execution. It also features a high number of external URIs, many hosted on disposable domains, suggesting a link farm designed to obscure the true malicious destination. The presence of urgency and callback lures further supports a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 8

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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
  • 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://gabconstruction.com/ckfinder/userfiles/files/74524351895.pdf
    • https://tvmreza.tv/ckfinder/userfiles/files/zofuvakuvejokokagazufami.pdf
    • https://healthmatters.me/userfiles/file/nufunudinozufi.pdf
    • http://jlssj.com/qianzi/upfile/case_editor/file/lorokogifenoguxudutam.pdf
    • https://www.leasing.net.in/ckfinder/userfiles/files/roxelalolagidewejivuz.pdf
    • https://madame-tina.com/ckfinder/userfiles/files/dakopasinakomixekapovu.pdf
    • http://keralatravelpath.com/uploads/file/98937964868.pdf
    • https://nocnepal.org.np/ckfinder/userfiles/files/guzafuzupuvuxewo.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/e50f94ea46c2817879deebbb4585a0d9/19138023453.pdf
    • https://agroadvanced.com/app/webroot/newsletters/editor/files/2669047734.pdf
    • http://gibisch.org/files/files/lawopu.pdf
    • http://studiolegaletrotta.eu/userfiles/files/risajijijak.pdf
    • https://octvads.site/js/ckfinder/userfiles/files/77246391860.pdf
    • http://andrelandberg.com/userfiles/file/99953599636.pdf
    • https://livres-arts.com/ckfinder/userfiles/files/75505792104.pdf
    • https://gabconstruction.com/ckfinder/userfiles/files/41510546441.pdf
    • http://telekommarketing.com/firme_data/files/87799535254.pdf
    • https://pnp-studio.com/fckeditorfiles/file/begejolojuv.pdf
    • http://isisthailand.org/file_media/file_image/file/fikusatadijozamosepirome.pdf
    • https://davaocarrental.com/images/file/19907957705.pdf
    • http://misr-consult.com/userfiles/file/zilub.pdf
    • http://artetendasud.it/userfiles/files/93355496697.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=connection+manager+apk+for+call+recorder
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd20.bin
a32474cb40946fc37b5830534d69e6ca8a0ac25b6f6d1730b0997bff31faa3f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD20 17868 bytes
font_01_sfnt_off0000fb75.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB75 16792 bytes
font_02_sfnt_off0001138c.bin
2efa96d99692a448e9b3321fe31ad40920c2c7a22896d077cf0651f54c40c862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1138C 10920 bytes

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