Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e97464f2379a882…

MALICIOUS

PDF

71.1 KB Created: 2021-01-18 10:02:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 577d5f7497edc8f65ff8498dc78a999e SHA-1: 4a782184a14d36be6826cc879d6bd77bb1e6f724 SHA-256: 2e97464f2379a882cb76003f0e1740ae7d3bbb1e501ca21f97605bced68f36da
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a biography. The presence of multiple external URIs indicates an attempt to redirect the user to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/wb?keyword=swathi%20deekshith%20biography PDF link annotation
    • http://talezoruvaje.iblogger.org/83696676204.pdfIn PDF document text
    • https://cdn.sqhk.co/tememukafosu/SohfWOQ/car_running_cold_after_replacing_thermostat.pdfIn PDF document text
    • https://site-1173244.mozfiles.com/files/1173244/47110682541.pdfIn PDF document text
    • https://cdn.sqhk.co/mepapogivoma/q23Mhfx/xevusiwuluvepixuxupu.pdfIn PDF document text
    • https://site-1178505.mozfiles.com/files/1178505/tesovaf.pdfIn PDF document text
    • https://site-1177442.mozfiles.com/files/1177442/24227261802.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/hcI2Eji/bright_ndoa_mp4_download.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/wazagidonux/kilirorakegame.pdfIn PDF document text
    • http://demiwadipojaz.epizy.com/pobivofi.pdfIn PDF document text
    • http://suxikikafib.epizy.com/boy_brigade_prayer.pdfIn PDF document text
    • http://napipipazapuka.epizy.com/motexeruz.pdfIn PDF document text
    • http://zenowalu.rf.gd/uk_business_email_list_free.pdfIn PDF document text
    • http://gebutetivifupa.epizy.com/bacterial_culture_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/2019_calendar_south_africa.pdfIn PDF document text
    • http://lememisuxelivem.rf.gd/keymar_kerosene_heater_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/81732100195.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/45510395139.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_off0000d761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD761 5688 bytes
SHA-256: 037d6caf875be6afee66aaf7a1f6c4a7383f0ba59fa2534c9260dc2a50ac93c0
font_01_sfnt_off0000eac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC9 10788 bytes
SHA-256: 8c2601f9b9df2206d16d520504c09ae2763d9b7f0e82536f6339647316e826b8

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