Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4e43dfc6cc49e0…

MALICIOUS

PDF

75.7 KB Created: 2021-01-27 07:10:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1074dd9c7754afedc756cfaeaab71184 SHA-1: a78a134564f1d5d69e8138395dadb58052d81c98 SHA-256: eb4e43dfc6cc49e08c21fc9ffab949fb7d63b180c27c5886928cbb91a3ba4a77
196 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
  • 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://bologen.ru/aws?utm_term=behringer+umc22+guide PDF link annotation
    • https://ziduwoparexor.weebly.com/uploads/1/3/2/8/132815175/1401a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474977/normal_5fc83f92b57c8.pdfIn PDF document text
    • https://debuvubuni.weebly.com/uploads/1/3/4/8/134846467/vinagijitiv.pdfIn PDF document text
    • https://nufewaxitobazat.weebly.com/uploads/1/3/4/7/134748461/xovivus_faveti_vesagogixunoz.pdfIn PDF document text
    • http://goodsfor.life/sepotiriligafoaf76h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457604/normal_5fc5948c5770d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367960/normal_60017deb40efb.pdfIn PDF document text
    • http://akmurzina.com/katilogawezuxumif7m5e.pdfIn PDF document text
    • https://burevojaziji.weebly.com/uploads/1/3/4/7/134729690/bf1efef.pdfIn PDF document text
    • http://beach-fruit.fun/taralaxhqfod.pdfIn PDF document text
    • https://xovonugobo.weebly.com/uploads/1/3/4/6/134688771/f84bf812bd1c.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/debiwelof/atelier_rorona_dx_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/watermelon_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/assistive_touch_app.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/woduvowaselifi.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/83117141474.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/18191106974.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/vodisufemor.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_off0000ec20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC20 5112 bytes
SHA-256: 50771bde2cdf9a2d5116908ae6515b59ad7039788114e0412d5d15cd4c599423
font_01_sfnt_off0000fd60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD60 11060 bytes
SHA-256: 83e1d813abd7064729b2e188d73106a013778dfd1037895483df4893f24669cd