Malicious PDF — malware analysis report

Static analysis result for SHA-256 8885ccc3cc66eaa3…

MALICIOUS

PDF

73.7 KB Created: 2021-01-31 07:38:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0b40356cb1391a0636f9206dc0215f32 SHA-1: d1fbfffc1c8fa41523eb269bb096ddd017d3ea4e SHA-256: 8885ccc3cc66eaa358034108ad197fee533e6e694df416188a5e72bd5254f6a1
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://druttle.ru/aws?utm_term=ata+guidelines+thyroid+cancer+pdf PDF link annotation
    • https://topirameji.weebly.com/uploads/1/3/2/6/132682330/808191.pdfIn PDF document text
    • https://laratenin.weebly.com/uploads/1/3/2/8/132816160/togurupowujar.pdfIn PDF document text
    • https://jewukezi.weebly.com/uploads/1/3/0/9/130970006/9022201.pdfIn PDF document text
    • http://pay-order.info/roman_military_clothing_ospreym6v04.pdfIn PDF document text
    • https://lirobepofuneve.weebly.com/uploads/1/3/0/7/130740173/7773ae49e17.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/entrepreneurship_development_definition.pdfIn PDF document text
    • http://ch-redirect.icu/asus_sabertooth_x79_drivers7modg.pdfIn PDF document text
    • http://damita.fun/labepagaketuropezidiuuzwt.pdfIn PDF document text
    • https://papuwupiruji.weebly.com/uploads/1/3/4/3/134348025/7dbd4c1b7.pdfIn PDF document text
    • http://boost-shop.xyz/17488787034eyhcd.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/zumezeviwakiz/25413939739.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/free_tv_guide_antenna_minneapolis.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/ameliorative_vs._transformative_interventions.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/bubagexefufuwebo.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/argusinformation._com_linkedin.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_off0000e33d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE33D 5508 bytes
SHA-256: cc390b2d618560cf0b4203e3041ae92e9f7f23decac60424173957c73a062868
font_01_sfnt_off0000f603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF603 10588 bytes
SHA-256: 547b95139fd9631caf9c27246122a24730bbf9697266dddf5336bffbb782871d