Malicious PDF — malware analysis report

Static analysis result for SHA-256 58898e4e45306445…

MALICIOUS

PDF

68.5 KB Created: 2021-01-20 19:27:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e550ccb8e4a762b0c533d7f711454cf8 SHA-1: 2d0f171d2abe0a00696dabb97124bdd47216f268 SHA-256: 58898e4e45306445ae500fac56030518e38bf40499a739bf453b622db7acee5a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wb?keyword=shooters%20world%20the%20villages%20hours PDF link annotation
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/pofafalap.pdfIn PDF document text
    • https://cdn.sqhk.co/ropikenetu/hdzfIha/chaos_rings_3_mod_apk_revdl.pdfIn PDF document text
    • https://kazawiluk.weebly.com/uploads/1/3/5/3/135384823/budegazomer.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzalolotagi/JdR8hcP/werewolves_online_game.pdfIn PDF document text
    • https://xibedawik.weebly.com/uploads/1/3/4/5/134584063/rozijipeg_jumazotifit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mapexas.epizy.com/kiwazonesakuzodabumuxexa.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/acrylic_sheet_supply_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/archicad_21_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/72600271244.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/37866692159.pdfIn PDF document text
    • http://xivutunitilema.epizy.com/navojizekirusaba.pdfIn PDF document text
    • http://latuwukatagowa.epizy.com/unfreeze_equifax_credit_report_online.pdfIn PDF document text
    • http://wufofot.rf.gd/hey_you_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/15_ntrca_applicant_s_copy_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/satupilewe.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_off0000cd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD71 5340 bytes
SHA-256: 0388f5c199a7a9a75dff89c6840c99bfea45e21f99882889753f7c75f910d878
font_01_sfnt_off0000dfa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA8 11056 bytes
SHA-256: 8c2b42de2badc2aa87bfd96133506117e497522ac9856b874c2c8e2ad1e03c87