Malicious PDF — malware analysis report

Static analysis result for SHA-256 106a2444567f89bd…

MALICIOUS

PDF

69.3 KB Created: 2021-02-23 05:07:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b91e3cae22dd69851142c697c2ddaa10 SHA-1: 375f0ff49a433541b6004c37d5e15307420b7998 SHA-256: 106a2444567f89bd61a5ea475cfe0fcafa6bdaaa3bb024dd3ddd90c6c6ef5bdf
96 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics and a machine learning classifier. It contains an embedded URL pointing to a suspicious domain, which is likely used to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to cultural differences, which is a common tactic for phishing or malware distribution.

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://maypoin.ru/123?utm_term=how+does+folk+culture+differ+from+popular+culture+and+high+culture PDF link annotation
    • https://cdn.sqhk.co/gusiloxi/cSvXtjj/20924544549.pdfIn PDF document text
    • https://cdn.sqhk.co/lazodadevab/KUhgujh/19091879803.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/hcN3rsf/54775951576.pdfIn PDF document text
    • https://cdn.sqhk.co/nozesinipi/iIkEegH/pac_man_nes_walkthrough.pdfIn PDF document text
    • http://lerasusakibura.22web.org/fire_emblem_heroes_merge_allies_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/rebamomidaw/3fijtja/acrylic_nails_ideas_short.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/cIFiihc/international_mobile_number_recharge_online.pdfIn PDF document text
    • https://cdn.sqhk.co/nofoxanu/hhhSjis/rugudetarorifasaxilazer.pdfIn PDF document text
    • https://cdn.sqhk.co/metevetufi/hjge5jg/28556083854.pdfIn PDF document text
    • https://cdn.sqhk.co/duwewofowus/R5hD7bS/lirizerokijebamibu.pdfIn PDF document text
    • https://cdn.sqhk.co/vikoparif/MjeGiey/greenleaf_apartments_minneapolis.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/jehgjjM/novukabafif.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/giM4tgc/40803212310.pdfIn PDF document text
    • https://cdn.sqhk.co/nilamemiw/hhZuheF/woodsmith_magazine_customer_service_phone_number.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nogibusap.epizy.com/simple_login_page_template_php.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_off0000d1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F7 5684 bytes
SHA-256: ad8432787e1c39769859d0350d2fce82de29b7e5e1f776367bc933b590191df5
font_01_sfnt_off0000e536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE536 10224 bytes
SHA-256: 9e31bf4fd426b5b75f02b91a025a6b8b5010d982273938f173b5895511b8cd76