Malicious PDF — malware analysis report

Static analysis result for SHA-256 bccda104f6079d74…

MALICIOUS

PDF

94.0 KB Created: 2020-11-23 07:00:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1d9429ffaf2d8a1f5ae907b8615bc56d SHA-1: d0bb701b80d0edbd9fd73c58749e832dc94fccd8 SHA-256: bccda104f6079d7479c45b16803a0748c2716a1decb014777804932f3f3ddb9d
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO link farms and phishing. One of the primary URLs, 'https://traffset.ru/123?utm_term=why+is+crunchyroll+down+today', suggests a lure related to a service outage to entice users to click. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffset.ru/123?utm_term=why+is+crunchyroll+down+today PDF link annotation
    • https://gupugeja.weebly.com/uploads/1/3/4/2/134235999/5765623.pdfIn PDF document text
    • https://kupanonul.weebly.com/uploads/1/3/4/6/134682697/40a5e5.pdfIn PDF document text
    • https://tivurenufetoza.weebly.com/uploads/1/3/4/2/134235987/bezuduvotonuriw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/davubewu/autobusu_stotis_klaipeda_informacija.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/35421477927.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/piwopazilexizekole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d13a74c-56a0-4383-ab5b-f9f2b1275267/sivunarivisulofoda.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/3519254657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/331b64af-0257-46b1-9261-004eb3eab09b/67179796656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3838d0e5-7afb-49a5-b510-9df801845051/47215113758.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f83a88c5-6b8b-4974-a544-971fb25cf58b/gedikef.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/wuruvefadomokikut.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/14181814653.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/sozej.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD358 4272 bytes
SHA-256: b7870a0a3a1ca43ad13e569961b27c34b8b44e0ebfa04f1b4e5b126f9db4f126
font_01_sfnt_off0000e25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25F 4996 bytes
SHA-256: 98af022d9609ed4041eedc14f8b1cfaea6bfffb8ba5a5da116148d5ad287f5be
font_02_sfnt_off0000f355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF355 13192 bytes
SHA-256: 51cefc091c0779fe15a6a32e5274e2fae5551bdfcf90c367c3ba48238b5fb679
font_03_sfnt_off00011650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11650 11280 bytes
SHA-256: 99b1b060f1546d10cabdf71c906a60c1a0c6ba15e825c6025e797ef2f03302f3
font_04_sfnt_off00013c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C53 16880 bytes
SHA-256: fbbfc8b4ca7225325032a9dc8779715416001c66171eef0d6685ba0e10d830a3
font_05_sfnt_off000153cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153CB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
font_06_sfnt_off0001617d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1617D 1740 bytes
SHA-256: 30155f06aedfb79de9f70f3e8e1372addaeb1c7fe56136300e854ed0c3fac0c5

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