Malicious PDF — malware analysis report

Static analysis result for SHA-256 2570e97816b7506c…

MALICIOUS

PDF

71.7 KB Created: 2020-12-20 01:06:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 718981f0aac56eedc1b29b0caa2cfbe3 SHA-1: 72d8d6e5767cb4c0d0659b0dee59f64c97a0c62d SHA-256: 2570e97816b7506c2b5802f8658232c5ee527964a70adcce777dc8217b4fad13
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with a critical heuristic identifying it as a link farm. The primary malicious URL, 'https://traffnew.ru/strik?utm_term=asi+se+dice+level+2+repaso+a', suggests a phishing or redirection attempt. While no scripts were explicitly extracted, the PDF structure and link farm heuristic indicate a malicious intent to direct users to potentially harmful 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 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.
  • 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://traffnew.ru/strik?utm_term=asi+se+dice+level+2+repaso+a PDF link annotation
    • https://vazoxavaver.weebly.com/uploads/1/3/4/8/134863882/4707824.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f87194edd39b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368265/normal_5f88f79919943.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/nigimul/88200192694.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/vertical_timeline_template_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/571de43f-9efa-4fbb-9d85-4edb08347ed2/706932532.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/heart_sounds_physiology.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/cloudformation_boolean_condition.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/2008_chrysler_pt_cruiser_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/circle_geometry_worksheets_grade_12.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/16121480809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f97edbf-89df-458e-8fcf-c05ca9c22963/queer_art_of_failure_introduction.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC368 5248 bytes
SHA-256: 15abc075ec637652d225f2d7272e8c188bac995bbe8abeeb8c8fd3c012c943f6
font_01_sfnt_off0000d55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD55B 11540 bytes
SHA-256: 2de593a94f946dfabedfac1ec16ffe1d78c27a5d4c1cc70101b057fa259e817a
font_02_sfnt_off0000fb2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2C 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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