Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e63c1a95f0ff5a5…

MALICIOUS

PDF

74.8 KB Created: 2021-03-22 03:31:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 25388dd425174f4b83fda86f6222ea05 SHA-1: c00e56dff5bd80b968307e699d22acf476994d09 SHA-256: 2e63c1a95f0ff5a5187a4583191624f6cfa8cfeee1f19b718057f610f5c2bcee
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 0.9996

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://mezovuduw.ru/123?utm_term=google+sheets+tutorial+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388422/normal_604203a8af472.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487903/normal_5fde678b32b00.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/how_to_work_out_the_number_of_moles_of_an_element_in_a_compound.pdfIn PDF document text
    • http://mekapidi.medianewsonline.com/70090062764.pdfIn PDF document text
    • http://doniposebuk.iblogger.org/selumap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449774/normal_5fc7af3830cc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382423/normal_604bb7869d0b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450624/normal_6046708a67983.pdfIn PDF document text
    • http://losiruwu.66ghz.com/dexanajepa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490266/normal_5fefeacd4109e.pdfIn PDF document text
    • http://lipexifinidoda.scienceontheweb.net/what_was_the_last_ipod_nano.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460449/normal_6000877b6d967.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/a3fa28ed-babf-41e9-a4f1-494e68cfd9e9/88131211775.pdfIn PDF document text
    • http://juzelipa.rf.gd/88205319432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e7c9700-49fe-4f68-abde-0265e5ef69ef/21331136470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d34e588e-d7d1-4170-ad7f-f937b3f7809b/steins_gate_episode_7_reddit.pdfIn PDF document text
    • http://daforewepon.epizy.com/mitosis_worksheet_college.pdfIn PDF document text
    • http://muweluboxakok.rf.gd/3000534517.pdfIn PDF document text
    • http://wasaxotudulolo.epizy.com/baba_koto_din_dekhina_tomay.pdfIn PDF document text
    • http://fusopub.rf.gd/gevedukofoxalugofofasuk.pdfIn PDF document text
    • http://luvoximod.epizy.com/jotewefefupanonet.pdfIn PDF document text
    • http://jurizamumi.myartsonline.com/absceso_perianal_manejo_antibiotico.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_off0000e737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE737 5332 bytes
SHA-256: 68bf41b6abf2d2544d79fa2a9611eb004450116fbf1ec136d69cd47e8da8fbb1
font_01_sfnt_off0000f957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF957 10364 bytes
SHA-256: af6ff83f7690af8acb4c5f772d8a6abf0479912d06a8acdc33f028011b12bf10

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