Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae409406fa0a0fb1…

MALICIOUS

PDF

71.4 KB Created: 2021-02-25 12:46:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b1566bf806368c1e13798dddab4941e9 SHA-1: daf61e60d283d55581c79b2048a4a0dede9dddb9 SHA-256: ae409406fa0a0fb1035f4e84faee5ce2e7b58868aecd9ff6a0ba388ae676358f
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://jottigo.ru/award?keyword=plc+programming+course+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422884/normal_601f1ae26fac3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_6016a85924de7.pdfIn PDF document text
    • https://vasuwogi.weebly.com/uploads/1/3/4/0/134017955/kinudezigavopibolo.pdfIn PDF document text
    • https://pomapufawupufus.weebly.com/uploads/1/3/5/3/135397804/4312108.pdfIn PDF document text
    • http://verifybadgesbusiness.com/zugiwuxogivebipiwalaeuhyq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384483/normal_5fd771912851c.pdfIn PDF document text
    • https://cdn.sqhk.co/rovujesox/UzwieqK/baby_potty_chair_price.pdfIn PDF document text
    • http://pefujogori.iblogger.org/98565206991.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/hVIieF3/tuvagilejirukigesugajepil.pdfIn PDF document text
    • https://mutikotamibe.weebly.com/uploads/1/3/0/8/130874320/fd7538df6f.pdfIn PDF document text
    • https://zexirajeroluwub.weebly.com/uploads/1/3/4/8/134848753/benoxedireri_kudisemoke.pdfIn PDF document text
    • http://roflan.site/chicken_invaders_5_christmas_edition_freex0k9c.pdfIn PDF document text
    • http://fresh-ita.space/88466009987vzazh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476941/normal_5ffe95fde98d0.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/jotogorurekuro/business_information_services_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/bts_love_yourself_answer_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/arduino_due_chip_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/wow_classic_horde_mining_guide.pdfIn PDF document text
    • http://puvusevakap.epizy.com/2009_bmw_328i_repair_manual.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_off0000da94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA94 5336 bytes
SHA-256: 165da925d9987496877e5a1cb932bd633dc4a7a731b0ebfed351f47d01307e4b
font_01_sfnt_off0000ecab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAB 10428 bytes
SHA-256: bdae58eccc15765ba7237c5c5140da81e1f427938cdf9566b561c6dc7ad44866