Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dabd015b5b219a0…

MALICIOUS

PDF

75.4 KB Created: 2021-03-21 01:38:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b95a673897066f8a5ef9e4705e802c5a SHA-1: fd3aebe53844c413b99e32364b7815e899696f33 SHA-256: 2dabd015b5b219a0df820b090affe78bfae8dda0d3850620fe7f31e50605a0e1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/wix?keyword=block+story+premium+apkpure PDF link annotation
    • https://cdn.sqhk.co/mevexobuzur/zvriije/jiffy_lube_smog_coupons_reno_nv.pdfIn PDF document text
    • https://cdn.sqhk.co/xawesani/jdIhagg/colors_that_match_with_purple_and_green.pdfIn PDF document text
    • https://cdn.sqhk.co/veludewozen/zV6heja/hakuoki_memories_of_the_shinsengumi_gameplay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417414/normal_602abb8cd6da8.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/zhhEFjd/stacked_crates_scrap_mechanic.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410186/normal_602c14a44f28a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zusewijoje.epizy.com/guarantee_verb_third_form.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/vasovaxedemafovidakeva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4612c44-2d52-4c33-806a-357bec1faa98/63428738135.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/bulletin_newsletter_templates.pdfIn PDF document text
    • http://bovamiwojilonem.epizy.com/5069347856.pdfIn PDF document text
    • http://tewowes.rf.gd/33814517147.pdfIn PDF document text
    • http://zaluxoxo.epizy.com/748014841.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/percy_jackson_the_lightning_thief_read_aloud_chapter_21.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e811f348-dedf-4016-8c51-c43af06cf846/gobug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eba66031-81af-421e-aad4-4998763417ba/fourier_analysis_an_introduction_elias_m._stein.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cb0452d-aa70-4673-ba48-528a84bd6fca/what_might_you_have_if_you_dont_feel_well_worksheet.pdfIn PDF document text
    • http://mimenevav.epizy.com/34238711560.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/kufigopidobuwalapamapozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/071c80e7-b1ce-4bc1-91c6-4099680cac27/43078226995.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_off0000e88f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88F 5292 bytes
SHA-256: 17d95169794f8a7f02786ec3f8c86cbdce5783e8cfeabf719f44b841b6043fc8
font_01_sfnt_off0000fa86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA86 11120 bytes
SHA-256: e2e32f0d1e2afc87328517a3b1808aab85e2d153dbbcade947365aff316c8224

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