Malicious PDF — malware analysis report

Static analysis result for SHA-256 e49db4ef0487e0f2…

MALICIOUS

PDF

60.9 KB Created: 2021-02-17 22:51:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8ae270807db41cafab681ea75ba53adb SHA-1: 0ebfd727a719b3661829798e2fb48158fdd5f6d6 SHA-256: e49db4ef0487e0f2bd432e1c8ce2a3dbd3663967149ebe9a23fe2428c4351ffd
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://jacksth.ru/wix?keyword=ap+economics+unit+2+test+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476273/normal_601ad59379707.pdfIn PDF document text
    • https://kigukudisan.weebly.com/uploads/1/3/5/3/135321724/3741812.pdfIn PDF document text
    • https://jezuvafu.weebly.com/uploads/1/3/5/3/135348480/tetiju.pdfIn PDF document text
    • https://bexokafosirur.weebly.com/uploads/1/3/2/6/132695536/gujunutexovakogekod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501045/normal_5fffcb61ede4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393044/normal_5fd7d776f2fc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419827/normal_6021a61e31be8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407777/normal_5fce56d3be673.pdfIn PDF document text
    • https://dogusomuribe.weebly.com/uploads/1/3/0/8/130814063/9c1c7a94544d726.pdfIn PDF document text
    • http://pamesiso.22web.org/40442558283.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/jexijer/bewijijiriwofi.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/mitel_5330_ip_phone_auto_answer.pdfIn PDF document text
    • http://pefogitoveni.epizy.com/platform_9_3_4_harry_potter_film.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/branding_mockup_template_psd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/85252434305.pdfIn PDF document text
    • http://firuwasuwubo.epizy.com/example_discussion_for_biology_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/hollywood_blockbuster_movies_tamil_dubbed.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/wasuzaxa.pdfIn PDF document text
    • http://fabonek.rf.gd/4494504003.pdfIn PDF document text
    • http://pamidomepimebop.rf.gd/leveling_guide_warrior_classic.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_off0000b493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB493 5260 bytes
SHA-256: c9c3f725a22c721ebece7438e1faddff8f63780193cac182ff24634232b7034a
font_01_sfnt_off0000c675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC675 9368 bytes
SHA-256: b026edd852419eb9d1f355641f0f1ded34e9c66741e341976d45517d273f3c0b

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