Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcad7bdd2b23b20f…

MALICIOUS

PDF

95.6 KB Created: 2020-12-11 14:23:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c381ae25ff3a981f393a907417004343 SHA-1: b4d09b7dc87abb7af26f19d154e795196799d0f3 SHA-256: fcad7bdd2b23b20f7f9ca77ea1d2fca09088a7fec510e560e148ab032af5fa30
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains a URL that appears to be part of a phishing lure, disguised as educational material. No scripts were extracted, but the presence of an external URI suggests the document is designed to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/aws?utm_term=logic+gates+questions+and+answers+pdf+sinhala PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496826/normal_5fcabe9d852d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451565/normal_5fc4bf4c5df65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478952/normal_5fb7fb3cdeddc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491412/normal_5fbc2f0133416.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5f8acc8bb2947.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393762/normal_5fc9b367c8f48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbe8aba1-5a47-4f7e-ab83-b274752b4c04/moodle_univ_angers_ent.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/movun.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/viking_fire_sprinkler_installation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/62159126748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a13a45-ae5d-4899-b270-d9966d8ee0f1/how_to_list_margins_on_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/81175573390.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/adblock_mac_safari_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb0ac725-ef8c-4441-a69c-ddb12a789db8/android_core_apps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f88c892-5f3a-4ebe-9198-03e2a4bd028c/philips_sonicare_e_series_manual.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA50 5576 bytes
SHA-256: 8b7d7a5a3aa28a3e204a7d8532ee8add1cd6c3a0eb5a6ae3ac61599c6a28ab6f
font_01_sfnt_off0000dd17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD17 33500 bytes
SHA-256: 091b6c4b7e49dad535af7abf695734cd8596b0871416387bc8400e238eae3f9f
font_02_sfnt_off000126fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126FC 4008 bytes
SHA-256: a5dc636f168cfc80d0e590d3fe6b855cee8d005ffa7f7bac8dfcdaafc10d1739
font_03_sfnt_off000136b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136B8 10596 bytes
SHA-256: 7e528c13919bae3f5c2b854b7c049d2ad74b52e4299aba6ca8a893c443fce9d4
font_04_sfnt_off00015b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B1D 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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