Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce878189b0a0260…

MALICIOUS

PDF

67.9 KB Created: 2021-03-16 05:12:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4719791eca5ce842911bddcc834a6bf2 SHA-1: 5318dc07fd928209cc3ac30d521dc9bc0f1edeac SHA-256: 0ce878189b0a0260f62c972fc27ebdcf882ee7d6e0eb866f1ed8df4147b42682
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/award?keyword=bluebeam+pdf+download+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4475580/normal_6041e1059f466.pdfIn PDF document text
    • https://dixosupisuboju.weebly.com/uploads/1/3/0/7/130776754/620554.pdfIn PDF document text
    • https://sejexogubason.weebly.com/uploads/1/3/1/0/131070030/5272395.pdfIn PDF document text
    • https://losuwigawoje.weebly.com/uploads/1/3/5/3/135304717/5299955.pdfIn PDF document text
    • https://vipukawolatu.weebly.com/uploads/1/3/4/4/134486161/ce8be25c252ce1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495262/normal_600352d09a27a.pdfIn PDF document text
    • https://pixumoxijabana.weebly.com/uploads/1/3/4/7/134748481/farakuxofekitod.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/tevigotu/84432702046.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/sodakalid.pdfIn PDF document text
    • https://2b08c346-38d8-4763-b559-bb9d4fff2313.filesusr.com/ugd/40c9d6_50041fdda9e443229f0b0be885af3feb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/fekurazinazeligokux.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/gezebadilawiguzedi.pdfIn PDF document text
    • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_2b56489fc83b4887b12efccb3fc907b5.pdf?index=trueIn PDF document text
    • https://26f2e344-8444-46ea-90c9-5a893bcc2fb3.filesusr.com/ugd/b8c837_edbba93e3ac247888f39d2825402d1e0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/nafedunuzadox.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/42192919489.pdfIn PDF document text
    • https://6fc76513-a17a-4053-940d-bef108f5ea85.filesusr.com/ugd/3a5ef0_4a6d1656872343d5a9b2e0502659a313.pdf?index=trueIn 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_off0000ce40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE40 5288 bytes
SHA-256: 0c2018be2080029f8e32f7d43cca375a6a936fc8df317a83b0b52c4c8363b88a
font_01_sfnt_off0000e038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE038 10048 bytes
SHA-256: 5001c58e2ff71ccd06f3a418acf79a1327bafabef3ce545153ad3529ae01b08b

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