Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd75210df70c5e2…

MALICIOUS

PDF

94.1 KB Created: 2021-03-20 22:21:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2912885fd104b261b4a11f94ded459d7 SHA-1: 6573441ddb9d07282b53943f748dd9bdfd8b63ce SHA-256: 0bd75210df70c5e22b63c7e40e259b464bae9abb88877c3cdc58e760a533a4f0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains an embedded URL that redirects to a malicious domain, identified by heuristics as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the presence of external URIs and the overall heuristic profile suggest the document is designed to exploit users by directing them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://mezovuduw.ru/wix?keyword=assassination+rogue+pvp+guide+5.4.8 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490949/normal_605638dbd6df6.pdfIn PDF document text
    • http://alexandreablog.com/fejuvinusakoloterakoderjah3y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488116/normal_601e8ca6d3099.pdfIn PDF document text
    • http://repochka.site/zokologavidebfvix2.pdfIn PDF document text
    • https://xukifunizagopo.weebly.com/uploads/1/3/4/0/134013279/tajugilobawibi.pdfIn PDF document text
    • https://zaxizibu.weebly.com/uploads/1/3/4/6/134672664/421436.pdfIn PDF document text
    • http://babbieshop.ru/how_to_contact_walmart_hrwl5uv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368985/normal_5ff4550acc1a1.pdfIn PDF document text
    • https://ralunudedosamot.weebly.com/uploads/1/3/4/8/134856058/refaguxonejava.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448337/normal_600f279dec763.pdfIn PDF document text
    • https://sudujosapo.weebly.com/uploads/1/3/4/5/134510416/332516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480748/normal_600d71489426e.pdfIn PDF document text
    • https://feronokemafa.weebly.com/uploads/1/3/1/1/131164109/8333245.pdfIn PDF document text
    • https://rewesiriwo.weebly.com/uploads/1/3/4/3/134318955/fedemozubegux-wazuguwopetos-xusogamerojap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/63844687775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8bcda76-2781-44b3-9260-233f3de32c35/sword_art_online_alicization_light_novel_volume_16_read_online.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/balsamic_honey_chicken_sheet_pan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acb47fc5-bef2-45d4-a943-0510a5e86917/jumping_jacks_in_spanish_google_translate.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/social_phobia_and_anxiety_inventory_spai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6267214b-0246-4cd2-8b42-9aa5add04312/como_hacer_archivo_en_celular.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/xitenuz.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_off00012f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F8C 5580 bytes
SHA-256: eae3b8d3d714ed615b055c24a5e80d332a78180c0ef84ad7d5886dc8ab5dbdcf
font_01_sfnt_off000142b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142B5 11388 bytes
SHA-256: b5c8dfd41bafcb96e717fb82e44a9efb7abe805f1e1efeb695b334501f1b62d9

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