Malicious PDF — malware analysis report

Static analysis result for SHA-256 245dfbf0917be12a…

MALICIOUS

PDF

69.6 KB Created: 2021-03-30 04:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: bba333a0dc94fc2916e3b4b5a43fc9c0 SHA-1: 5dffa7cc3f7458c519136af93fd3415f4b2de3f4 SHA-256: 245dfbf0917be12a393e9db210fc19560984449e6ae1c8edf462de606f0e319b
166 Risk Score

Malware Insights

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

The PDF contains embedded URLs and heuristic detections indicating it is a phishing lure. The document body, though heavily obfuscated, suggests a pretext related to software installation. The presence of external URIs and a link farm heuristic points towards an attempt to redirect the user to malicious content, likely to download a payload disguised as a password-protected archive.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://jumiwimov.ru/aws?utm_term=instalar+windows+10+pro+en+laptop+acer PDF link annotation
    • http://wunazaro.22web.org/marriage_certificate_haryana_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473403/normal_5fe932d1a8bf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454182/normal_602e1fda5ef57.pdfIn PDF document text
    • http://businessmentality.com/drake_meme_template_reversezptkm.pdfIn PDF document text
    • http://vnds-super.space/1477556636387rbo.pdfIn PDF document text
    • http://dresdenpharma.ru/p_word_love_hd_wallpaperwkk0h.pdfIn PDF document text
    • http://websecurer.tech/calories_in_a_large_dunkin_donuts_iced_coffee_with_milk_and_sugarhcu0d.pdfIn PDF document text
    • http://idealica-uficialeitalia.website/825960883401bjzm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498971/normal_6056aeb21b57b.pdfIn PDF document text
    • http://1xbet-registrat.site/40460770246lej0v.pdfIn PDF document text
    • http://idealica-ituficiale.website/grade_3_math_textbook_nelsontspd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464327/normal_6026724a64e8e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8399f38-11aa-41df-bc60-f039162a593e/43776916657.pdfIn PDF document text
    • http://lanakupi.epizy.com/74506520209.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0f0f7bb-9cbb-4453-ab11-0d12825497f6/13435181066.pdfIn PDF document text
    • https://3794eb9c-cc8b-492c-aecc-44533f76aaa6.filesusr.com/ugd/1ee69b_f4b1a395eaf04476950508b0bf805e37.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f969dc16-75f9-4c4e-8118-266a44a3d19c/how_to_learn_to_speak_russian_for_free.pdfIn PDF document text
    • http://kosejoviwo.epizy.com/39090219563.pdfIn PDF document text
    • https://964beff5-d24f-450a-94e2-fa7e9faef44a.filesusr.com/ugd/61158f_4e7e2dd3a43f45098518401607589fb3.pdf?index=trueIn PDF document text
    • http://manepiri.epizy.com/75999105781.pdfIn PDF document text
    • http://pexefenebize.epizy.com/nosawob.pdfIn PDF document text
    • https://9170d309-caca-4186-8987-bf6b40ce219c.filesusr.com/ugd/baef12_0bdd78eedb554c6f9f6e9cf2dd3f7336.pdf?index=trueIn 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_off0000cf3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF3B 5292 bytes
SHA-256: 21fe06226526d689ec0a988d8a053ed88e57eb15aee81f269589f4f12f4bf909
font_01_sfnt_off0000e159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE159 12092 bytes
SHA-256: 424f6d1cd89af1e0e173f0c86d33a9cd6aaaf264151fab43578627d8a080c96e

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