Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a063e7c4d48578…

MALICIOUS

PDF

80.9 KB Created: 2020-12-03 04:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e1e176de0baca47e15cb291ead1665ab SHA-1: daa82c7ec2d3d04626887c3c85c30bef5673ec2c SHA-256: a9a063e7c4d485787bf777ca09eb6fcef656c550569e5f8c90eee5c4e7c8e59c
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffine.ru/strik?utm_term=matematica+para+quinto+grado+primaria'. This URL is the primary indicator of malicious intent, suggesting a phishing or malware delivery attempt. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/strik?utm_term=matematica+para+quinto+grado+primaria In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/84c40c42-7123-45f2-b319-9a6f731a26b9/mejosugaxoxudilar.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdeece18e72e5fdb9b92a0/1606282959267/child_rock_climbing_prodigy.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/bpmn_2._0_business_process_model_and_notation.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/quran_arabic.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/amazarashi_living_dead.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/84089020495.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf7cf084-936e-42c5-8d4d-9b53e2c34839/kexazaveverim.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/fagarifikuzafoziden.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/former_ireland_football_players.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10026d58-c2e2-48ca-b4b8-cbed62b8b29d/piliwamosetarewimera.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/ffxiv_retainer_guide_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d754b86-1b0d-4d44-93f5-8da7c6822624/mgs_paz_porn.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/guess_the_brand_level_162.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ba6ac89e1c4b8fbd7cfc/t/5fc1089e18e72e5fdbfbe2d3/1606486174617/not_so_big_house_architects.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca1c7803-0ad5-4642-b63f-acc685a6dea4/vezefajopan.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADE 5196 bytes
SHA-256: 384acc628438fef30a290bfcc4439cc2fc5d5d10f5aae3ce2c77afe22cb0056a
font_01_sfnt_off0000ec66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC66 12316 bytes
SHA-256: 721bbb03ea8d21528e1ebd84f60f1f48498dae45791e9c8e544438c42b2406e9
font_02_sfnt_off00011389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11389 16076 bytes
SHA-256: 0d03823816bfc2bb29b885185635d2d58774f633b2a72e12020b397fcc03ed95
font_03_sfnt_off00012837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12837 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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