Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0127015bdcd43f…

MALICIOUS

PDF

66.4 KB Created: 2020-12-23 14:53:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8aee0defd80ba9fb1d83868677e6b035 SHA-1: 126bdcf2097bd9200584ed7e3689a65041739459 SHA-256: 6b0127015bdcd43f1d2f8bcd435c430ac16591dbf2ec3a61719fefba2734c6cd
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://traffking.ru/aws?utm_term=afrikaans+music+videos+free+s PDF link annotation
    • https://xutonipojoneri.weebly.com/uploads/1/3/4/6/134667901/07990f2f693c.pdfIn PDF document text
    • https://kuvobawodamelis.weebly.com/uploads/1/3/5/3/135350379/midisadatedemotewo.pdfIn PDF document text
    • https://foziramud.weebly.com/uploads/1/3/4/5/134585073/ronatedekozejo_ximukunaxev_fusisafepunumix_zubobenivaxe.pdfIn PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/magum.pdfIn PDF document text
    • https://joxorarosod.weebly.com/uploads/1/3/3/9/133999743/06ad974bdcfd8ea.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/01009675-f6b3-42c4-86a4-47deb7e29120/pokemon_go_mod_apk_download_for_android_2019_latest_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae1a6bb6-7be0-462d-b404-63a7f3693ac5/reading_fluency_standards_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da72fcf6-ee09-4ed6-a114-a0b97142eb36/zulenerope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd01bbaf-6763-4339-86d6-7ecbe7d2b616/nigivonuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1396361-b821-462b-a90c-9edcbd11c0ca/lesson_6_solve_proportional_relationships_page_61_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50ea9e9d-a331-4c84-8afb-cb3d88b7931b/kifagegi.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/gimigiponevevapuluzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8a8831a-8fa9-4899-9939-b2912155ff20/52115470743.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/405413db-cfba-42d3-9a6a-3712a5e6c8ca/walmart_augusta_maine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b7a8f75-ae02-471d-846a-a650e1030000/the_coffeehouse_investor_free.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_off0000c7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7B9 5248 bytes
SHA-256: 9d60d35829cb5d2a47aefecff1461287985188f6e9d52a0b15df08c1f63214c5
font_01_sfnt_off0000d989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD989 10748 bytes
SHA-256: 5504600b9e15e69ab2af9f5a251c6dff8aca4ec3469a817bbc3d6a1d3af97a5e

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