Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2fcb45263527c64…

MALICIOUS

PDF

75.2 KB Created: 2020-11-30 00:26:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 74efa038f7056762f020d005b31b963b SHA-1: 5a8f2a6ff2165f072d833aea0014564174ecc110 SHA-256: d2fcb45263527c644ae8e27f061b3a5f0703b138a89ecc9da9303fdf03c0ed56
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/strik?utm_term=what+does+nwedi+stand+for PDF link annotation
    • https://tadadali.weebly.com/uploads/1/3/4/0/134095934/xipabunivukuvowosez.pdfIn PDF document text
    • https://zakexexeg.weebly.com/uploads/1/3/4/7/134720850/jukot.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/22f01863-a24f-4fef-8a1a-eabdee22fe17/curry_public_library_events.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d0b7bbd-7eec-44e8-a0b6-1cef90b01f31/fearless_itv_ending.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48af01dd-bee4-473c-946b-3b74d49822b6/kapamodukajuxigowimakiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55928536-3efe-4201-bd12-7ad2e61da639/stardew_valley_change_name_switch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56709831-1503-4bce-ab12-f325315279c2/20350122767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03a406b6-d3b9-4e65-a07e-d55e7b369c21/gelimofagifigovere.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e5c7481-3412-4d27-b84e-d91f2c277727/makanefukafov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7335e18-6c24-4014-9ff0-a572d36e45d1/2015_toyota_prius_v_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37bf0b9c-5371-4ba9-b31f-06c6475c8caf/jetejamurorowepotujox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82316e19-7cf0-4704-a020-51743fc8b1ad/57575281617.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bedc0da7-e6ba-499a-a9a0-d122f71b1e65/physical_chemistry_atkins_10th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/gewulixivebob.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DA 5068 bytes
SHA-256: 19277c75f32357f7056f1fa4aa4db7cd14b79c352da65ec5c9db6e907f522de4
font_01_sfnt_off0000fb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2A 10840 bytes
SHA-256: 9b9b908af04ea6d167d02be91a18bfcb10d724c1c9279bc2c4554b58081b0c20

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