Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa64b442cc6edf5a…

MALICIOUS

PDF

71.6 KB Created: 2021-02-19 00:55:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7181b6a84189a5ce3cbb76c30f166eb2 SHA-1: 3c5e23b117c252572a856288c9c089dffc2aa82a SHA-256: aa64b442cc6edf5a6d4defca9c742532dbbfdaee621a32b70c4d94590bda8964
136 Risk Score

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
  • 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://jottigo.ru/wix?keyword=changing+belief+systems+with+nlp+pdf PDF link annotation
    • https://cdn.sqhk.co/fodexuxefeba/0ZZjbhi/nibuwuba.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/ghftDY6/defender_90_2020_price.pdfIn PDF document text
    • https://cdn.sqhk.co/furafurume/LZeVjfx/mosedepoboxotip.pdfIn PDF document text
    • https://cdn.sqhk.co/nazujovo/dg5icgh/43698760103.pdfIn PDF document text
    • https://cdn.sqhk.co/dujagazatad/sjcj9KK/events_update_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/nixenexax/ij2hahf/how_do_you_make_a_disposable_mask_smaller.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/mijumomub/fitipabefikapuboba.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/botany_view_hotel_gig_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/the_division_2_chatterbox_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/retasakabijotazogokapuwak.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/canon_lide_210_free.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/conscious_sedation_guidelines_australia.pdfIn PDF document text
    • http://lufeneweb.epizy.com/underground_julian_assange_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/analise_sintatica_visual.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/vuxesulef.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_off0000dbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE2 5596 bytes
SHA-256: ed0f3b28a68ce925c6b7669220ce0d4e53f55ed7eb75fa4f50b0cc636713b4dc
font_01_sfnt_off0000eed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED8 10092 bytes
SHA-256: 2ac1522e25b6a7fb7bb958e59e3bc68e3094f46fa2ca70175c1195576a2c563a