Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac8c80d4bf8dd62…

MALICIOUS

PDF

73.4 KB Created: 2021-02-27 10:28:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8877e4a69332bed416fbad40fe3f39b2 SHA-1: 8441f392789e02d1319fc3076c53408f00e324fd SHA-256: 7ac8c80d4bf8dd6236cc93e7d57b0dca70c275036c3c0490d59f05629fa9f5b9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though partially garbled, contains text related to a power washer query, likely a lure to disguise the malicious nature of the embedded links. The PDF contains numerous external URIs pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content or phishing sites.

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://crophysi.ru/aws?utm_term=why+doesn%2527t+my+power+washer+have+pressure PDF link annotation
    • http://1fps.ru/90368737924qfj3r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483610/normal_5fc7241cda827.pdfIn PDF document text
    • http://zanartcc.net/new_bollywood_movies_website_2019u5y6c.pdfIn PDF document text
    • http://funseeds.site/colorimetric_determination_of_aspirin_lab_reportgq2fa.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/zojezolunomuwitabanawipa.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/how_do_i_change_the_time_on_my_panasonic_landline_phone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409098/normal_602257816567a.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/rixax.pdfIn PDF document text
    • http://kindraretterath.com/why_is_academic_text_important_for_studentselkjb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493891/normal_6007bf43415a8.pdfIn PDF document text
    • http://f1l3download.site/what_is_api_570_certificationzpy8e.pdfIn PDF document text
    • http://delaem-sami.online/58752819694khu4t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414342/normal_5fd0b4e51fb04.pdfIn PDF document text
    • http://pimifawimonidij.mywebcommunity.org/how_spell_slots_work_5e.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/fonazuzixagizir/bollywood_movies_2019_latest.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/26516409393.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/84459319712.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/6441391711.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE161 5468 bytes
SHA-256: e0515a1237421f29bd4dc10eb93affb8d71be266f3949f0e314fc49b77541fcf
font_01_sfnt_off0000f3f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F5 10912 bytes
SHA-256: 1ec01f8eab79c0a4f2476d71d744c21480fc388aa2e39532bae3bff461918126

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