Malicious PDF — malware analysis report

Static analysis result for SHA-256 a724962208673fed…

MALICIOUS

PDF

66.1 KB Created: 2020-11-23 15:17:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6ae522daf1bc5f0a430992d1e1c9b9e6 SHA-1: 12e3459b2be74ef95163017c2021c49be24c82ef SHA-256: a724962208673feda3dbc0247bdd6d04a76239ea7fdc1d7cfae73d6415472481
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://trafffi.ru/123?utm_term=highland+mtb+park PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451754/normal_5fb98b5589cfc.pdfIn PDF document text
    • https://jowajasodosetu.weebly.com/uploads/1/3/4/3/134308851/tesonezewefobajixewi.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/068ef52e-374c-4346-ad94-2c7ff4723f80/moxowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1151ba74-c9ce-4850-8330-a6b15108dc0f/robigufuruzenofalemuzib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7795f5c7-dd00-48dc-8eba-2d692b3bce30/saga_delirium_hana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e179e25-f7b8-4be6-bc0a-e6cb0879d057/mizewejetajofedija.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4f9cfbc-7866-4377-951e-86f202ec7e70/custom_weapons_starbound.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cd57c4a-fdb0-4c66-a852-f69b77830bf0/jepunojis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ac281f9-4b28-46b4-9eaf-7a7df96a62a4/leposupusaposogawawilomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb38bc3b-5fac-4f11-9868-d7ef80ae696d/gifomiwisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64ed1db4-bf49-4d09-a517-983dbcf04807/kofiwadofazurobefabusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa8c588b-5122-48af-9ab3-44d58b79fbc9/download_windows_10_loader_daz.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_off0000c2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C7 5360 bytes
SHA-256: 5e2a741cd1541d9d7371e66b400f12a206253e1c74d276d685b19d26f525778c
font_01_sfnt_off0000d4d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D0 11768 bytes
SHA-256: 3838c7f1cc352caf5c69a8de6fdf6cc81fe7a623f73b34818ea282d72282ca11

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