Malicious PDF — malware analysis report

Static analysis result for SHA-256 b18bd563a15f44c4…

MALICIOUS

PDF

70.3 KB Created: 2021-02-20 00:56:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: aa898ecd02cf501f54f2f726fe0ddbf3 SHA-1: 6851e433ef9c30e9c235c71ee05465d5c72c3cee SHA-256: b18bd563a15f44c4f0006b379aa51c9cd0ce6f6f1d405d4f012ad5069f6a0f4d
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/aws?utm_term=what+are+the+duties+and+responsibilities+of+service+crew In PDF document text
    • https://cdn-cms.f-static.net/uploads/4448713/normal_600fd32f52ca0.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/igSpBge/speaker_booster_windows_7.pdfIn PDF document text
    • https://goxanakevixi.weebly.com/uploads/1/3/4/8/134857001/gezibinojuxifenekeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_6010fcb5e1938.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446259/normal_5fff35d91d04f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_600f58d9c5bc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484605/normal_60303a94072f1.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/loranoduzuja/emulate_android_on_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/97838087393.pdfIn PDF document text
    • http://bepizokebador.epizy.com/brain_dead_full_movie_hd.pdfIn PDF document text
    • http://pobipegosaba.epizy.com/88875166986.pdfIn PDF document text
    • http://rumajajoneder.rf.gd/mako_shark_facts_sheet.pdfIn PDF document text
    • http://nixevafuzija.epizy.com/wonawurefufilaxado.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/vewemupafuza.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/mariam_khan_reporting_live_cast_hotstar.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_off0000d624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD624 5548 bytes
SHA-256: fb2b2f7923b4d0e60097980b7b3ad65739f1e28a61605fdd464a280e324f180f
font_01_sfnt_off0000e913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE913 10280 bytes
SHA-256: 36973eb68871dd02e413fb00b9b9e4c91dcb91cf5d1c9b963f0a276f718abec0

Open this report in the interactive analyzer, or submit your own file for analysis.