Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d6eeeea6a8a22b…

MALICIOUS

PDF

72.7 KB Created: 2021-03-04 03:33:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 87bc9927203268a61e7947799df531f2 SHA-1: 9627de9c5acc31088167c67fbb479609cf48eecd SHA-256: e7d6eeeea6a8a22b6fc871429585c7a67a55393bc0ff701d2aca0dc16bfd0f74
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/award?keyword=how+to+setup+my+hp+3050+wireless+printer PDF link annotation
    • https://xezitolisaja.weebly.com/uploads/1/3/1/4/131406502/peligoxob_femejiledom_wafixowizus.pdfIn PDF document text
    • https://fonekukiko.weebly.com/uploads/1/3/5/3/135393218/xebanuxuparepekazuni.pdfIn PDF document text
    • https://bireguvax.weebly.com/uploads/1/3/0/7/130775683/kaxatexixu.pdfIn PDF document text
    • https://wufikasuruxur.weebly.com/uploads/1/3/1/6/131636700/dodeguvepidaxew.pdfIn PDF document text
    • https://boxemafal.weebly.com/uploads/1/3/3/9/133997404/potudududimejig.pdfIn PDF document text
    • https://pifabesi.weebly.com/uploads/1/3/5/9/135958575/gimux.pdfIn PDF document text
    • https://wuzinetasinozud.weebly.com/uploads/1/3/1/6/131606123/jifewavur.pdfIn PDF document text
    • http://white-x.fun/97435586192xp3rz.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/tuxexi/isabella_lullaby_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/leather_card_holder_pattern.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/print_to_wireless_brother_printer_from_ipad.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/dezaronorofal.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/how_to_use_battery_calibration_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/kcet_2016_question_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/47304127736.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_off0000e08f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08F 5432 bytes
SHA-256: cdaad5cdb50296f7cd689cea2c48289972a24ae1032d02d00725f7c2706bcf29
font_01_sfnt_off0000f2fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FB 10164 bytes
SHA-256: 324055c908035a181c30210ea4c96c6f1048769193bebbce7250ecf5ed55b9be