Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c65f98648b9b56…

MALICIOUS

PDF

71.0 KB Created: 2021-02-15 18:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 37f19e867ad7e6664bf629d73c492200 SHA-1: 9c3bf2d509186e2b1cb606730033ee0e361d251b SHA-256: c9c65f98648b9b566effe5e79bc52ebec90ed1f3d52ada43aed87a6f84e4486c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://bologen.ru/wix?keyword=physics+classroom+elevator+ride+interactive+answers PDF link annotation
    • https://pakitaxe.weebly.com/uploads/1/3/4/3/134318313/mipiwakajat.pdfIn PDF document text
    • http://world-wild-shop.com/simple_price_list_template_freel4n1z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_60140b1d1f0e9.pdfIn PDF document text
    • https://zemojedi.weebly.com/uploads/1/3/5/3/135333580/6989564.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461766/normal_5ff1f7e61a810.pdfIn PDF document text
    • https://wufaderafezika.weebly.com/uploads/1/3/0/7/130776219/7703784.pdfIn PDF document text
    • http://lnstagram-help-businesss.com/globe_and_mail_marketing_reporter040wj.pdfIn PDF document text
    • https://xuvelufuxilo.weebly.com/uploads/1/3/5/3/135387868/3007200.pdfIn PDF document text
    • http://vseti.life/71564363772ab7r4.pdfIn PDF document text
    • https://tapojanez.weebly.com/uploads/1/3/1/3/131398133/vuzev.pdfIn PDF document text
    • https://tuwopabawebude.weebly.com/uploads/1/3/1/3/131382790/vewide-tuzadabukag-vujef-ledava.pdfIn PDF document text
    • https://sejuxotanodefif.weebly.com/uploads/1/3/5/9/135957191/a48216d1da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426556/normal_602a3d8c06e20.pdfIn PDF document text
    • https://setibadumizokeg.weebly.com/uploads/1/3/4/8/134880372/4149120.pdfIn PDF document text
    • http://vereffka.xyz/dirodivirabamopewinakdhdg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374968/normal_5fe6b3ab970d5.pdfIn PDF document text
    • https://vubufogos.weebly.com/uploads/1/3/4/7/134766152/8b636e8.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/suzujewa/viper_snake_images.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/milonelion_riddle_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/dateline_reporters_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/aetna_dental_reimbursement_form_dubai.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/puzzle_pieces_template_powerpoint_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/contract_buyout_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/famikoxajoguxona.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/belajar_bahasa_arab_dasar_sehari_hari.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/gopupefuxuduzesarubuj.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_off0000d909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD909 5432 bytes
SHA-256: 7539ff2f97abb808ad04dc17cbed590bf7ff8fda52c31fb9e501d28e9a2bd5e3
font_01_sfnt_off0000eb73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB73 10208 bytes
SHA-256: 52606e60ea2e3851a8c5f11f58a8f6c3df27270ddb89e0eb33f2133da971e1f8