Malicious PDF — malware analysis report

Static analysis result for SHA-256 415be63736567900…

MALICIOUS

PDF

75.5 KB Created: 2021-03-14 01:22:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: bccceca70a73a5f0cfaa9812cc06b7b5 SHA-1: 4df6a4a1362a20f376afc8d74fa9933eb31383b6 SHA-256: 415be63736567900b02374ebe1c21db3263482291e2ed3b3425bbe7d083ccc27
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to search terms, further supporting the attack pattern.

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://druttle.ru/award?keyword=aines+selectivos+cox+2+pdf PDF link annotation
    • http://pixidilivutep.medianewsonline.com/cards_against_humanity_dirty_version_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/musutalivun/ghdiagf/tewuzofozuvunekinubewifi.pdfIn PDF document text
    • http://kemytbok.xyz/613279028173gehd.pdfIn PDF document text
    • https://bulabameworiw.weebly.com/uploads/1/3/4/0/134096114/7292069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_6049026bc841f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417658/normal_5ff540b2bba11.pdfIn PDF document text
    • https://kupajozowujuz.weebly.com/uploads/1/3/4/8/134881722/edb3a9dc9.pdfIn PDF document text
    • https://widewosum.weebly.com/uploads/1/3/0/7/130775244/zikapawuz-varonebekubi.pdfIn PDF document text
    • http://ita-talia.fun/supply_chain_management_courses_online_india3zx2v.pdfIn PDF document text
    • http://segway-wheelchair.ru/is_death_note_on_netflixrh024.pdfIn PDF document text
    • https://cdn.sqhk.co/mifebemige/jjdjfhM/kezelazibegonabureduwop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384836/normal_600b6cd58be88.pdfIn PDF document text
    • http://fly-drive.online/12_stages_of_the_heros_journeyk7r60.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nejarisiwudu.atwebpages.com/vegetarian_foods_for_fat_loss.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_off0000e806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE806 5092 bytes
SHA-256: 1ab05a26b83d2b49a326d0fcbb78e81701482165e54eb59bc621df4b4adbf202
font_01_sfnt_off0000f987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF987 12688 bytes
SHA-256: 10cabe236cd628b3af88a6fccbbc5c3a7b1d344e2d1871e31f2d73073746eeeb

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