Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2d9a578045a9c8…

MALICIOUS

PDF

89.6 KB Created: 2021-04-08 06:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3dc01675db3dcc0368a14e6f02a7f4b9 SHA-1: b1f246097fb4c8c7a5dd28c06ac165b635591c49 SHA-256: db2d9a578045a9c8aeb4a4b4a6c8544ebc77da6c4f16f030d496fd3a98258949
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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://zajinet.ru/wix?keyword=macbeth+act+1-3+test+answers PDF link annotation
    • https://rekepepijo.weebly.com/uploads/1/3/4/0/134018016/xevikapovazifu-tivogube-karuzopo.pdfIn PDF document text
    • http://litetederus.22web.org/30819040814.pdfIn PDF document text
    • http://lujovotoloxes.iblogger.org/beachcomber_hot_tub_model_580_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/mozozezowos/4iaX2hj/basic_electrical_engineering_quiz.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/menosimifu_fisebapun.pdfIn PDF document text
    • http://vabuletarikinil.iblogger.org/59780282432.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/hgeChh3/81445887550.pdfIn PDF document text
    • https://zofazozudu.weebly.com/uploads/1/3/0/7/130739697/pamenojarateza.pdfIn PDF document text
    • http://simomezubuxo.22web.org/adding_dissimilar_fractions_worksheet.pdfIn PDF document text
    • https://guxozagubixox.weebly.com/uploads/1/3/1/4/131437827/xuzifalofowax-sitaxokep.pdfIn PDF document text
    • https://vitovoraf.weebly.com/uploads/1/3/1/1/131164311/3528635.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rebikesumusosu.rf.gd/mamiya_rz67_lens_hood.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c198c973-4833-4412-832f-cdd6b05a4cda/backbeat_fit_3150_vs_3200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36fe6dc1-65ca-4ee9-8171-01f5c0ab4d44/42303521279.pdfIn PDF document text
    • http://nezexufefel.epizy.com/deep_learning_python_scikit_learn.pdfIn PDF document text
    • http://jababonulet.epizy.com/lizeluridafeti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b24176f9-adfe-4101-bde5-cd3a3d83c69c/56744591255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/035c4898-21bd-4793-a18c-ba0710ba85f7/fibibakujojit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/131a6843-bb99-45a9-bcc5-dc4730ab5448/what_is_an_organic_form.pdfIn PDF document text
    • http://rurogapon.rf.gd/functions_of_management_information_system.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11666 5340 bytes
SHA-256: 8fea84fdc760f8c1f3973adaad4f22dd02f8f5cd1a234d20717849ce5353efe2
font_01_sfnt_off000128ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128AC 1624 bytes
SHA-256: f7c46864d2a2cdbc84aeddf5273081f51c6ba031876103fb77d9a199f7b3bc70
font_02_sfnt_off000130f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130F1 11792 bytes
SHA-256: 4f2734988f48ae093e0810f9c59f71d0408fbad247db6a4577738dbb394a4daa

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