Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3a4d15cddb8630…

MALICIOUS

PDF

70.4 KB Created: 2021-02-14 19:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 15c04cd050fdfcb485252ea82737560a SHA-1: 5e90ea2e2ad94d24067f0870ed0695dcd551c7a0 SHA-256: 7e3a4d15cddb86307aded667133e035065bc76d1b05a6dc094754f93eb15e6ff
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=mystic+krewe+of+femme+fatale+membership In PDF document text
    • https://nolutoxut.weebly.com/uploads/1/3/4/6/134683805/80f5b6c2948.pdfIn PDF document text
    • http://nubolats.xyz/kexizekasipitazugamonitoff8mcl.pdfIn PDF document text
    • https://tirokaroxere.weebly.com/uploads/1/3/2/7/132740449/da40bb.pdfIn PDF document text
    • https://fiwerabonu.weebly.com/uploads/1/3/4/3/134347662/bujozivewokevum_xepobenozu_nidubil.pdfIn PDF document text
    • http://itasda.online/bukobetezulunfgdt9.pdfIn PDF document text
    • http://cooldomen.space/instructional_coaching_log_template9o6b8.pdfIn PDF document text
    • http://erogan-encolumbia.site/libertango_violin_guitar_sheet_music1t3dl.pdfIn PDF document text
    • http://winoraama.fun/60206755869q2rmi.pdfIn PDF document text
    • https://zupalopozaguri.weebly.com/uploads/1/3/2/3/132302876/ribozujufega.pdfIn PDF document text
    • https://depasosuva.weebly.com/uploads/1/3/4/4/134483816/7a977865c88.pdfIn PDF document text
    • https://nevuvipegigi.weebly.com/uploads/1/3/4/5/134589722/saluw.pdfIn PDF document text
    • https://xisidugaboker.weebly.com/uploads/1/3/4/4/134436298/foxifedis_dilizuti_bajajonugi_lanefokezoxumak.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/rizijubovapuk/tibial_plateau_fracture_rehab_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/b._a._pass_2_movie_300mb.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/chemistry_notes_form_4_and_form_5.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/reporter_vacancy_may_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/marupanonumaka.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/acoplar_2.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC095 5656 bytes
SHA-256: b9499760c579db5d8869af756cc96c6136b49a9021bb59ef09dd846568e3b4f1
font_01_sfnt_off0000d3cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CD 10176 bytes
SHA-256: ad826098ca49f5665014da3b1f8cacf73251688e8098e2de8bd61cd50d619592
font_02_sfnt_off0000f6a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A5 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd