Malicious PDF — malware analysis report

Static analysis result for SHA-256 60af8b61f3eea97f…

MALICIOUS

PDF

75.4 KB Created: 2021-01-24 01:42:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 905579d295a385b93e8f96e2310c1fe7 SHA-1: 398e6d07316b09e1f5fa1a1c9747c80d3240b9b6 SHA-256: 60af8b61f3eea97fbc605b86ffe851712c69b5723dde6ae658db0678ee74e839
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffset.ru/aws?utm_term=android+studio+or+bluestacks PDF link annotation
    • http://davufemalolaj.iblogger.org/40076466863.pdfIn PDF document text
    • http://jibifiva.22web.org/50875639238.pdfIn PDF document text
    • http://kawolamekepe.22web.org/lab_report_examples_college.pdfIn PDF document text
    • http://xoguvux.22web.org/anorexia_2016.pdfIn PDF document text
    • https://bifixebuwo.weebly.com/uploads/1/3/0/7/130776276/nuvame-nugowanitukevil.pdfIn PDF document text
    • https://tifizadidamoz.weebly.com/uploads/1/3/1/3/131378816/861a1d78f33693.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dofavopuberobot.epizy.com/videoder_free_for_android.pdfIn PDF document text
    • http://bowukedogatowo.epizy.com/12682690481.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/wexiriv.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/kaxejujasunixavaxexe.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/50764036595.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/gejepodedepekuse.pdfIn PDF document text
    • http://besipopi.epizy.com/serilog_log_error_template.pdfIn PDF document text
    • http://pawekixezad.epizy.com/adverbial_form_meaning.pdfIn PDF document text
    • http://wubonaxe.epizy.com/atmel_studio_6._1_full.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/gefedasabubifub.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/hink_pinks_level_c_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/65478666081.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_off0000e8d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D3 5128 bytes
SHA-256: 7395b460e6010a60a3b42ec37a8ebeadda11ff5ca5bbb88ca5c904d02afe36ba
font_01_sfnt_off0000fa51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA51 11356 bytes
SHA-256: 2fe166f04067ef6d83b6428dbab1fb70ab6d5dbb4643813880242a7ee2f6d02b