Malicious PDF — malware analysis report

Static analysis result for SHA-256 997a66a65f440b29…

MALICIOUS

PDF

66.4 KB Created: 2021-02-16 01:06:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b61d2847a831de1431f24caafeb5dc26 SHA-1: bc84df6f375f09c6a362763cd7ae1d5dc9f73c27 SHA-256: 997a66a65f440b294282b8bece6df2323c3af1eefa91eca43646e08fd45b6f79
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=russound+mca-c3+manual PDF link annotation
    • https://cdn.sqhk.co/gugexuje/jsFjbie/whirlpool_wrs325fdam_parts_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452618/normal_5feb967924d8c.pdfIn PDF document text
    • http://forumapu.iblogger.org/expanded_noun_phrases_worksheet_ks2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465397/normal_602a7d3aeef90.pdfIn PDF document text
    • http://tifizutolakefu.22web.org/android_barcode_scanner_api_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzezufe/bidigBn/jadizewukojor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446774/normal_5fddaaca2818e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450501/normal_5ff697ce2a0be.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzezufe/ihif9Co/nonomolo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481834/normal_600a96f78d5f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403266/normal_5ffc38e482b1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366627/normal_5fecb6ca9513d.pdfIn PDF document text
    • https://cdn.sqhk.co/xafemepino/luHgfCi/planetary_alignment_july_4th_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nepupiborama.rf.gd/5709716952.pdfIn PDF document text
    • http://roniwixanedif.epizy.com/boxamosilazixelenomolubem.pdfIn PDF document text
    • http://sokevojufepizi.rf.gd/bipuvesufiduxudokivixugep.pdfIn PDF document text
    • http://mujijebal.epizy.com/venokuwo.pdfIn PDF document text
    • http://weralawubuzeg.epizy.com/8705992477.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_off0000c734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC734 5192 bytes
SHA-256: 3113869463c06a52001585ae876190fb40ef1b906c449ee096b39d4d085c7546
font_01_sfnt_off0000d8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D5 10428 bytes
SHA-256: 08c8d9fbb52d5514ad492640f01902315a6cbd647aad752d6400d4e055e2c9d3