Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d00ff9262ae4181…

MALICIOUS

PDF

77.3 KB Created: 2021-03-28 17:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3464a42a0083b0a8fc787ee1ea7be11c SHA-1: ea31f975ea88eb61d84cdf2bfcb6d86a0348321e SHA-256: 5d00ff9262ae418116cbf4650cddf5ad7418ae2f906038e363c45386cb87668d
126 Risk Score

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 0.9991

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://leonvi.ru/strik?utm_term=get+bartending+license+texas PDF link annotation
    • https://zinebarovug.weebly.com/uploads/1/3/0/8/130814534/1bec5a54.pdfIn PDF document text
    • http://fasafumataluxu.iblogger.org/61838050143.pdfIn PDF document text
    • http://wewofif.scienceontheweb.net/dulesizenemisaga.pdfIn PDF document text
    • https://bufujibuku.weebly.com/uploads/1/3/4/8/134862056/f406fb12a79afa.pdfIn PDF document text
    • https://gufogejerujog.weebly.com/uploads/1/3/1/4/131406717/7392749.pdfIn PDF document text
    • http://figojusu.iblogger.org/medical_certificate_form_1a_maharashtra_rto.pdfIn PDF document text
    • http://jixazepo.mywebcommunity.org/100th_constitutional_amendment.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/how_to_set_up_screen_mirroring_on_vizio_smart_tv.pdfIn PDF document text
    • https://losanuritajog.weebly.com/uploads/1/3/4/7/134730792/04bbd1d0.pdfIn PDF document text
    • http://wivaserana.mywebcommunity.org/a_que_se_debe_el_dolor_en_la_espalda.pdfIn PDF document text
    • https://pepesavujol.weebly.com/uploads/1/3/1/0/131071240/fexalaju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuxewon.epizy.com/wokiw.pdfIn PDF document text
    • http://tovedevekep.rf.gd/cultural_genogram_template.pdfIn PDF document text
    • http://pufalidupoge.epizy.com/vilis.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/chinese_handwriting_keyboard_apk.pdfIn PDF document text
    • http://pujukejesoteja.epizy.com/how_to_remove_iphone_activation_lock_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/22639742602.pdfIn PDF document text
    • http://wekiputozuda.epizy.com/54516634083.pdfIn PDF document text
    • http://pavasokunise.epizy.com/63534509699.pdfIn PDF document text
    • http://mulumibapetemom.epizy.com/63075553887.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/word_award_certificate_template.pdfIn PDF document text
    • http://veduredetud.epizy.com/26329128051.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/74248836887.pdfIn PDF document text
    • http://pesetunal.onlinewebshop.net/wubuwisufedizifonizek.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_off0000f15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15C 5344 bytes
SHA-256: 37f53356dc8cd7dd53a700974ec3c0ed1330c469d68c6ea3c9383a7b6f4a603f
font_01_sfnt_off0001039a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039A 10604 bytes
SHA-256: 0be86205bfa64cd2d81ef8f4f7e0352fc0da6aeb0b2edbe9b9b5e14dfd5af957

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