Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd8296c51f35353…

MALICIOUS

PDF

77.1 KB Created: 2021-05-11 11:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 7e1578aeb769085ec7f56ef99f32e179 SHA-1: ebd502575297e267edb3739ca12cc381fa24e52c SHA-256: 0dd8296c51f353531e131732a2838a3f79447f4090e7329dad45bd05f7a5fd9f
126 Risk Score

Malware Insights

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

The sample was detected by ML classifiers and ClamAV as a malicious PDF, specifically flagged as phishing and a trojan. It contains numerous external URIs, including a link farm on disposable hosting, suggesting an attempt to redirect users to malicious sites. The PDF's structure and embedded URLs indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=toro+power+max+826+oe+oil+change PDF link annotation
    • http://detonicro.website/22904487303y4rkt.pdfIn PDF document text
    • http://orehi-siberian-force.online/82251108324xqh4a.pdfIn PDF document text
    • https://suzagosezamonu.weebly.com/uploads/1/3/4/4/134446802/dumol-sirise-mepuxonife.pdfIn PDF document text
    • http://abreudesigns.com/rudut63zld.pdfIn PDF document text
    • http://vovpomnim.ru/doridugeit6b6.pdfIn PDF document text
    • http://card2card-perevod24.site/21608565938fvx85.pdfIn PDF document text
    • https://wumupokurura.weebly.com/uploads/1/3/0/7/130776197/ruzimawazolu.pdfIn PDF document text
    • http://trysol.xyz/98757214831ewbcy.pdfIn PDF document text
    • https://buralekareze.weebly.com/uploads/1/3/4/3/134326789/bakumam.pdfIn PDF document text
    • http://reliables.ru/360049529808v7mz.pdfIn PDF document text
    • http://konsalting.info/luvusisonezanideragegoa1ff2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ce83042b-5faf-46b5-bcbb-9b4d05ec7d33.filesusr.com/ugd/a31856_a3e033fa04fd41a8bbf9593591344275.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7560a03d-12b1-4d0f-82f4-96dbbf6cc317/why_is_macbeth_the_shortest_play.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbc62a34-cb8e-4daa-8eb6-6b922bdeccc1/wosemosonu.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/sosukixagovajurilevi.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/bollywood_movies_box_office_collection_report_wiki.pdfIn PDF document text
    • https://b81e1767-bb0d-4562-9f98-cfef66859bb1.filesusr.com/ugd/b48b60_d8fb87b57614424ab018fbfc8d77f18e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/varoximu/why_my_pressure_washer_has_low_pressure.pdfIn PDF document text
    • https://49550882-97ce-44db-a38b-6e383bb81149.filesusr.com/ugd/062c90_97b30786a3774a22b1828ebd065a66d0.pdf?index=trueIn PDF document text
    • https://6196a4e6-b3b5-4a85-a139-4ec84e0a53d9.filesusr.com/ugd/d01287_07fc9aaaaac54a718c6d8427bf9012b5.pdf?index=trueIn 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_off0000eec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC6 5756 bytes
SHA-256: 53fea3b5e922f6356209994aa3af9669d0255705cba1b64137e1809dd66c3096
font_01_sfnt_off0001024c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024C 10768 bytes
SHA-256: e352e58f4beef829431ebb29a4151d60c3734eb04f764ba7b9f7a9df43c08e03

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