Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb2829fcefe8baf…

MALICIOUS

PDF

80.8 KB Created: 2020-12-17 14:54:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: e8dcd29aafbe5c981f15c8c99438f9cb SHA-1: 728644e5e95ad6c1328c1f884c8df0a769eab74b SHA-256: feb2829fcefe8baf9750cb2db006c042f493dcde7ece5e9a184dada05765aac1
244 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffmen.ru/aws?utm_term=best+android+app+development+ideas In PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/pimemelaju-galewiwimav-zefugififirod.pdfIn PDF document text
    • https://zixamagexiwu.weebly.com/uploads/1/3/4/0/134012381/4107650.pdfIn PDF document text
    • https://zofisafewo.weebly.com/uploads/1/3/4/5/134508124/f6f3e257.pdfIn PDF document text
    • https://bapoxipen.weebly.com/uploads/1/3/4/6/134684349/getebuwuze.pdfIn PDF document text
    • https://tenagudewujuga.weebly.com/uploads/1/3/1/1/131164273/7594203.pdfIn PDF document text
    • https://fuzedefona.weebly.com/uploads/1/3/4/5/134578490/3231fb8003.pdfIn PDF document text
    • https://fibuwuvonej.weebly.com/uploads/1/3/4/2/134265895/0ecc9ca935d.pdfIn PDF document text
    • https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/12b63449.pdfIn PDF document text
    • https://minufufigazibur.weebly.com/uploads/1/3/4/5/134528603/fd813241a5ecfaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd4abbb6-fe9c-4cee-9729-d219d493f67a/9859339219.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/cary_fukunaga_it_script_2015.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc522e660f2895dc10348e3/t/5fd1b34d1693665fc7d02811/1607578445948/stickman_archer_online_4.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/lucky_draw_template_letter.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4dd79d793648408483a6/1606372823856/stupid_test_2.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/durixilolefo.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_off0000fe6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6A 5216 bytes
SHA-256: fa37265de02b40521e84833795d925395f3849a22ab4806f8f921b6c87741c03
font_01_sfnt_off00011017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11017 11280 bytes
SHA-256: 8966b1ea7776ddf8e32050446dbca5de600fb9668fbb06f8208d0c8de050c6cf

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