Malicious PDF — malware analysis report

Static analysis result for SHA-256 906ecc2a6d465246…

MALICIOUS

PDF

84.4 KB Created: 2021-03-24 23:16:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c21cdcf0d59b3bb351b3051d87f04f60 SHA-1: c9a1db16d61f9843dbdbca9ee272c149ca9ba7b7 SHA-256: 906ecc2a6d4652461bc8c0af2429115bef445b24442e0de211b67041f2151474
194 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, using a fake 'court appearance required' notification to entice users to click on embedded links. The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed for SEO manipulation or to distribute malicious content. While no scripts were directly extracted, the presence of numerous external URLs and the ML classifier's high confidence score indicate a malicious intent, likely to redirect users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://xajibur.ru/wix?keyword=court+appearance+required+nj+traffic PDF link annotation
    • https://cdn.sqhk.co/foropogajag/Yjfxheq/vr_games_online_no_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/Ejf7aib/exploding_kittens_playing_cards.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/bE6jjib/aimpoint_compm5b_reticle.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413005/normal_5ff59c256153f.pdfIn PDF document text
    • https://kigilejujagenit.weebly.com/uploads/1/3/1/4/131438309/eac7842938dd5f0.pdfIn PDF document text
    • https://lipopujowojirew.weebly.com/uploads/1/3/1/4/131408954/3267409.pdfIn PDF document text
    • https://rinotawobuv.weebly.com/uploads/1/3/4/7/134768279/9462234.pdfIn PDF document text
    • https://xojobade.weebly.com/uploads/1/3/4/3/134385351/be1acb7e9b994ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480758/normal_5fe7d147b1d7d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467573/normal_5fe22fe645b6e.pdfIn PDF document text
    • https://jedapozopimu.weebly.com/uploads/1/3/4/6/134614290/ccb25b77f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381971/normal_60547deca16aa.pdfIn PDF document text
    • https://buwuxebukiz.weebly.com/uploads/1/3/1/6/131606134/fufuka.pdfIn PDF document text
    • https://cdn.sqhk.co/zitibidino/jgifc0C/monkey_banana_song_like_baby_shark.pdfIn PDF document text
    • https://cdn.sqhk.co/nudofarus/ieijic8/kikosol.pdfIn PDF document text
    • https://gobujapupi.weebly.com/uploads/1/3/4/7/134725152/0a512c2e639.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403684/normal_5fe19c45e2744.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/d3b481af-9129-40a5-b12b-7aa258d89578/xubibas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f539c39a-e841-4c82-a55a-3fb49c133072/8006386626.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/vomevugenaseta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae267ada-0db4-4a9a-bc48-bc691318090e/xovugufixun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a89e9491-6699-42f2-af5e-addf634e7b16/25247321446.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/44478122586.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/pickett_slide_rule_n1010_es.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4df9363-af72-4cc6-b19a-c9211da6c592/femeta.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_off00010e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7D 5044 bytes
SHA-256: 5de33de4b95e497169d395174cbabd81676d72dd89843eb39c96187be7de0fc8
font_01_sfnt_off00011fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB7 10544 bytes
SHA-256: a7b76a71abbc6e34d701a0c52c855cb66a1400e8415440d0140d1aef9cea4c2c