Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb804fbcfb8c11bb…

MALICIOUS

PDF

122.6 KB Created: 2021-04-16 10:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e704a4c67a2b476d749687b285222f43 SHA-1: 05065e1b97be4f379c5026c7133c9e1c6c2e1d81 SHA-256: eb804fbcfb8c11bbf5ec0efa949232756747acec892286c32a86e03a6dd35928
156 Risk Score

Malware Insights

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

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 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/strik?utm_term=what+happened+during+the+1800s PDF link annotation
    • http://worelimupuvefam.mywebcommunity.org/teacher_retirement_letter_to_board_of_education.pdfIn PDF document text
    • https://veretiwuwe.weebly.com/uploads/1/3/1/4/131406621/d24d87ff.pdfIn PDF document text
    • https://mapokelamoda.weebly.com/uploads/1/3/1/8/131856574/8439218.pdfIn PDF document text
    • https://bupuvebawa.weebly.com/uploads/1/3/2/7/132740405/wazaxoxanid.pdfIn PDF document text
    • https://kawolusasemosu.weebly.com/uploads/1/3/5/3/135397741/tibusiratano_rasowufeweli_nelesef.pdfIn PDF document text
    • http://mukinumatonewo.getenjoyment.net/92819927163.pdfIn PDF document text
    • https://nexitikobimefa.weebly.com/uploads/1/3/0/7/130776699/99895b79bb3.pdfIn PDF document text
    • https://dijovenop.weebly.com/uploads/1/3/4/7/134705939/wedazes.pdfIn PDF document text
    • https://jikuvagipotax.weebly.com/uploads/1/3/4/6/134647272/e5fb0.pdfIn PDF document text
    • https://lapamijivosesez.weebly.com/uploads/1/3/4/5/134507295/33721.pdfIn PDF document text
    • http://mebovedu.getenjoyment.net/ekart_franchise_guide_download.pdfIn PDF document text
    • http://mesutilixuta.sportsontheweb.net/77371384161.pdfIn PDF document text
    • http://jonotijero.medianewsonline.com/wimixekoni.pdfIn PDF document text
    • http://fudoviwil.mywebcommunity.org/ruveru.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/vukusa/19728416122.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/marvel_comics_superheroes_ranked.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/bar_charts_and_line_graphs_worksheets.pdfIn PDF document text
    • http://masusoxowep.onlinewebshop.net/wizofevodavitozatokur.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/lowabegojux.pdfIn PDF document text
    • http://moxuzaridob.onlinewebshop.net/kubuzipitix.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/new_movies_2018_bollywood_khatrimaza.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_off0001a06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A06A 5592 bytes
SHA-256: 0286dfcbec8a61e193e67334d9e953c46f037a63bb3e5299b74593901dec68f9
font_01_sfnt_off0001b373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B373 12476 bytes
SHA-256: 0dcafbb31eb2a5e1b248462ba0d4665844621a872b6877e0c0bb28396f27e596

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