Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc05145d2b9f6fad…

MALICIOUS

PDF

73.1 KB Created: 2021-02-11 17:51:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e40d46a6b8d6c9b31ec7622d62b57f91 SHA-1: 8665953f9bef440711e123c5a2d0165bd84c4286 SHA-256: dc05145d2b9f6fadba5810413a918db1fa545e63cb1705e0efca46a212cc917f
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://baarspo.ru/wix?keyword=ley+del+impuesto+unico+sobre+inmuebles+guatemala+pdf PDF link annotation
    • http://best-ital.fun/carol_of_the_bells_pentatonix_audiof0ghf.pdfIn PDF document text
    • https://fojiwuduz.weebly.com/uploads/1/3/5/3/135309278/tegoterojuregopazi.pdfIn PDF document text
    • http://vas-rem.ru/acid_base_and_salt_worksheet_answers7acqw.pdfIn PDF document text
    • http://koprovk.xyz/ielts_academic_writing_tips_and_tricks5sn4o.pdfIn PDF document text
    • http://umniashka.ru/manual_canon_eos_6d_mark_iilbjn7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lumigetutiburu.epizy.com/angadi_theru_songs_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/church_hallelujah_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/architectural_working_drawings.pdfIn PDF document text
    • http://rukodulaban.epizy.com/dapozidigesijuvobu.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/90272782517.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/juroseluzesorurelef.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/93920339527.pdfIn PDF document text
    • http://nelodetasa.rf.gd/jemoxopizizapevufezilosit.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/char-_broil_performance_340b_gasgrill_tru_infrared.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/54798578927.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/bitrix24_website_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/clash_of_clans_in_jio_phone.pdfIn PDF document text
    • http://dokarapadupale.epizy.com/18430366054.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_off0000dccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCF 5660 bytes
SHA-256: 0dc5813b8e9836e93d60ac668fa188342a7ff1a09abc5075912c2038c3b27a52
font_01_sfnt_off0000f003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF003 11404 bytes
SHA-256: 3ea82833671a797d69eb0e95ac24f14ac3687a13820639fbfd210ab65ca32594