Malicious PDF — malware analysis report

Static analysis result for SHA-256 a323566fd4763fb7…

MALICIOUS

PDF

72.3 KB Created: 2021-03-04 00:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6eab02d96a150bf747af816669f8cefc SHA-1: 21bfd12939a7d98620793a297be09e8e0836595d SHA-256: a323566fd4763fb722cfff2eee5fbf933501dc1096cb88b3eaab66a933d6cf8c
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://soxebez.ru/award?keyword=free+crochet+patterns+for+blanket+squares PDF link annotation
    • http://clipshd.design/dovimagoxxj9hz.pdfIn PDF document text
    • https://jebovemedafo.weebly.com/uploads/1/3/0/8/130813903/8111500.pdfIn PDF document text
    • http://sweetygirl.club/revue_technique_5008ggiew.pdfIn PDF document text
    • http://7lessons.space/how_to_do_pen_and_ink_wash1ktyh.pdfIn PDF document text
    • https://jukosixosibi.weebly.com/uploads/1/3/1/8/131871462/0a0e680e6fc2.pdfIn PDF document text
    • https://jinepesel.weebly.com/uploads/1/3/5/3/135346763/432527.pdfIn PDF document text
    • http://sbrf.link/fixowafumarotimoj458ee.pdfIn PDF document text
    • https://dibozuvoba.weebly.com/uploads/1/3/4/6/134692955/fawageve-roberu-jenapefesoki-fipodivaj.pdfIn PDF document text
    • http://denazofumoxebo.iblogger.org/shakespearean_insults_lesson.pdfIn PDF document text
    • https://xamatetafuxu.weebly.com/uploads/1/3/1/6/131606968/54316e.pdfIn PDF document text
    • http://theplafond.xyz/10526148273p26pt.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/nowokil/canon_eos_750d_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/lofina.pdfIn PDF document text
    • http://gamutazuzores.epizy.com/seethamma_andalu_ramayya_sitralu_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/circle_sticker_design_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/70050899065.pdfIn PDF document text
    • http://vokerajud.epizy.com/amd_radeon_hd_7770_2gb_driver.pdfIn PDF document text
    • http://sukifimogu.rf.gd/how_to_reset_a_la_crosse_radio_controlled_clock.pdfIn PDF document text
    • http://jenepopavuse.epizy.com/gokaze.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/arcmap_10._2_tutorial.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_off0000df3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3F 5388 bytes
SHA-256: 125cfa318e0eb3b16219fe4208225f51f8eb702a7f254373234036483476d032
font_01_sfnt_off0000f18f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18F 10060 bytes
SHA-256: b3b3e4656e9c5f74e084e7e5fd91202e2a6129aae4c90f1d7f05f697532bc742