Malicious PDF — malware analysis report

Static analysis result for SHA-256 2feaca5750d02b42…

MALICIOUS

PDF

72.8 KB Created: 2021-02-22 18:08:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 19e81f9f3ed2617d0ee3abdf3c1915c9 SHA-1: 31dfa09672a99d60b9c5c899fb61fc0b7a70a442 SHA-256: 2feaca5750d02b42ab85b5124e9028ae7f590bd901845661dde2af2d6d6469e1
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=gazi+tv+live+cricket In PDF document text
    • http://pubgucbayim.com/breaking_news_india_live_todayzf18o.pdfIn PDF document text
    • http://lafovawolifi.22web.org/elementary_number_theory_burton_solutions_free_download.pdfIn PDF document text
    • http://krokoboko3.xyz/escape_the_labyrinth_bookz1e6d.pdfIn PDF document text
    • http://blog-millionaire.buzz/29594932578507u8.pdfIn PDF document text
    • http://accface.in/javejuk5bxzw.pdfIn PDF document text
    • https://bekajujoxofutit.weebly.com/uploads/1/3/1/4/131406668/gugewef-bigakitag-webekam-vivedupaned.pdfIn PDF document text
    • http://pristav.pro/ford_3910_tractor_owners_manual180dr.pdfIn PDF document text
    • http://liketsven.xyz/hoop_stack_level_355hlcga.pdfIn PDF document text
    • http://uscarinsurance.info/vuzasoxununevew05d2m.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dopodisimedu.epizy.com/63819224793.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/steering_committee_report_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/filtre_aspirateur_electrolux_ultraperformer.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/hotstar_apk_latest_version_for_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/netgear_wndr3700_v2_firmware.pdfIn PDF document text
    • http://lebofimuvi.rf.gd/tejuxepo.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/xewipi.pdfIn PDF document text
    • http://sudiwoke.epizy.com/nukojisegasuwexojer.pdfIn PDF document text
    • http://fitagijup.epizy.com/88143691869.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_off0000e1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C6 4820 bytes
SHA-256: ac180fa03c9a6696b29c0f3a33d6ae8f9ddf89e6e05f649f66f28f4f41ffa3d4
font_01_sfnt_off0000f24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24E 10612 bytes
SHA-256: 4b35af2b31f136cf31c5a3f1e69a02892e3112417f90c8c43554c6fa67624d20