Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae69ceabaabd559…

MALICIOUS

PDF

72.4 KB Created: 2021-02-09 00:39:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3296daed6099be7a624223ba219443b3 SHA-1: 9929b0ea823a441ea89aae067ee4bc60780166b4 SHA-256: dae69ceabaabd559231d28a768d63be0ab72d393bcd1f33019f8ed4e1b618d85
254 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
  • 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://crophysi.ru/wb?keyword=brand%20factory%20online%20shopping%20apk In PDF document text
    • https://static.s123-cdn-static.com/uploads/4390374/normal_5fcbc1cb2ec67.pdfIn PDF document text
    • https://cdn.sqhk.co/seworani/jajj1jd/15595606593.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467601/normal_6007ec516c29e.pdfIn PDF document text
    • https://jufesuzukexo.weebly.com/uploads/1/3/5/2/135294717/pipoxarudagip.pdfIn PDF document text
    • https://boxesagako.weebly.com/uploads/1/3/4/5/134589877/padagesipakes-lotubotagufura-xavujutese.pdfIn PDF document text
    • https://zatitobeme.weebly.com/uploads/1/3/4/0/134097178/2220734.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416792/normal_5fe121411ccc1.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/pavujiniz/carl_sagan_contato.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/3528678663.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/basic_psychology_case_study_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/teponekupi.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/aggressive_retsuko_dublado.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/68707941646.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/crew_neck_soccer_t-_shirt_mockup.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/xogexifabuked.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_off0000dd35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD35 5632 bytes
SHA-256: 9111e23cb70c7e1f3ad0bbac8c9ae86e6a5fd65a2411b255ab7c1fa61875f947
font_01_sfnt_off0000f06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06A 10596 bytes
SHA-256: 32a9f1f69d2a27cfaaa440678db52a10be74a3c609e08c4e9979db20c9096a35

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