Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff084bab7f269cf6…

MALICIOUS

PDF

68.1 KB Created: 2021-02-28 13:39:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2ca64d181610cb2ba0753a9c6c032751 SHA-1: c3debb102d75582f00a001a5b1c3216332cb178a SHA-256: ff084bab7f269cf6b2bf44a0f50cb1e25312a733236b34c2576bd87b22360191
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://xezojetit.ru/wix?keyword=ap+government+powerpoints PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450156/normal_5fea059f9337f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453902/normal_5fecf3779de6e.pdfIn PDF document text
    • https://bolukuja.weebly.com/uploads/1/3/0/7/130739437/febatifowanerag-koran.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466996/normal_601d3974ba325.pdfIn PDF document text
    • https://gerogebu.weebly.com/uploads/1/3/1/6/131637886/20ff8db63.pdfIn PDF document text
    • https://xaxepilote.weebly.com/uploads/1/3/4/2/134265473/jajimibamijajo-xerekojipedes.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/tuxenipup/adobe_acrobat_standard_dc_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/xibizetufu.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/sukimutanasumojifur.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/9683547419.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/pemarejuzowenasu.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/surum.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/upsc_agriculture_mains_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/46640960848.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/shagal_free_random_video_chat_app.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/2499992915.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_off0000cf2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2E 5036 bytes
SHA-256: c3b776b089d0f2f9e110df7548685d1a0868b6f7658db95c77c15bbe8122a95d
font_01_sfnt_off0000e05a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05A 9956 bytes
SHA-256: 14fadc49b1a75f0aa8d462a2260104868bfb2cb683e4c08901cec5706f9990e9