Malicious PDF — malware analysis report

Static analysis result for SHA-256 1677130434634d76…

MALICIOUS

PDF

79.4 KB Created: 2021-03-18 07:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 32cfc234f56063075e3e18da3ee2d309 SHA-1: 28c024a76a986c81af77ecc061fe0ebd32c108f5 SHA-256: 1677130434634d7612ad841243d06894342cd947c10957ed91cc179243aca45e
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an external URI pointing to 'baarspo.ru' which is presented as a search result for 'periodic table of elements pdf list', indicating a social engineering lure. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs suggest it is designed to redirect the user to a malicious resource, likely for further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://baarspo.ru/award?keyword=periodic+table+of+elements+pdf+list PDF link annotation
    • http://nejupike.mygamesonline.org/59038203670.pdfIn PDF document text
    • http://classicalnaturally.com/tonevisipefoxudebaq4eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467910/normal_601e40b4a62d3.pdfIn PDF document text
    • http://help-violation.com/famelenee0859.pdfIn PDF document text
    • http://kugaraginoja.mypressonline.com/dizel.pdfIn PDF document text
    • http://pojapusevipuzu.mypressonline.com/autocad_bathroom_elevation_blocks_free_download.pdfIn PDF document text
    • http://wagikopegufiza.66ghz.com/59502707336.pdfIn PDF document text
    • http://zefunafujazi.22web.org/the_black_prince_full_movie_in_punjabi_download_720p.pdfIn PDF document text
    • http://card2card.live/metal_forming_process_bookub6ed.pdfIn PDF document text
    • http://energierecrute-emplois.com/rukemijegujuvikatomnp9mc.pdfIn PDF document text
    • http://siditomema.22web.org/73012068855.pdfIn PDF document text
    • http://creditpm.com/25318663303gunip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494417/normal_60334d688ff99.pdfIn PDF document text
    • http://mini-cam-v2.club/vodafuboniduruz9ul5o.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/fejififimaketo/bill_of_lading_template_alberta.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/10708687960.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/57275018212.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/4890023630.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_off0000f76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76B 5444 bytes
SHA-256: 45e99d75c2c9ef603ef2bbd58ed7cbd39ed87f8427685e5e4f0f76a4125e3a4f
font_01_sfnt_off000109cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109CF 11052 bytes
SHA-256: 3ef8addacfa2c0787ca299aa4328b3344d1d17b25f24fcf5e2439fb0d31a10bd

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