Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e3c0f14c424c095…

MALICIOUS

PDF

74.1 KB Created: 2021-02-22 00:29:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fb6db89beca0575b6fa5429aa75b0397 SHA-1: 8846322ad6364b07ef0790cbb280270013b79d17 SHA-256: 8e3c0f14c424c095a521584d4ffb2a2fae03927fc4fd6975319fbac5837dff70
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://seumenha.ru/wix?keyword=magnetic+loop+antenna+design PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455377/normal_5fdd274ff0934.pdfIn PDF document text
    • http://wopudenunebuwaz.22web.org/prozac_nation_libro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486748/normal_6003d7daf335e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463565/normal_60170e398e1bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501998/normal_6001567d62187.pdfIn PDF document text
    • https://womominajarizu.weebly.com/uploads/1/3/5/3/135392323/290c36ad17bdf6.pdfIn PDF document text
    • https://nujetamewude.weebly.com/uploads/1/3/4/8/134881912/bc4cf14fe3bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387060/normal_5fe7d5c29baf7.pdfIn PDF document text
    • https://xowebanum.weebly.com/uploads/1/3/1/4/131453595/bb537332b24b.pdfIn PDF document text
    • https://fosobezi.weebly.com/uploads/1/3/4/8/134898374/sezezudew-xenenudesamij-gajidumiba-ledaxosuti.pdfIn PDF document text
    • https://xabogiseduwa.weebly.com/uploads/1/3/4/7/134717421/9199372.pdfIn PDF document text
    • https://siwuxamafovad.weebly.com/uploads/1/3/4/4/134489720/tefodowafuguvawigew.pdfIn PDF document text
    • http://vorgazme.com/zotifip58cmb.pdfIn PDF document text
    • https://burodinijosago.weebly.com/uploads/1/3/0/8/130813714/2262621.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485704/normal_5fec1865c2065.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450417/normal_5fe3c983cb961.pdfIn PDF document text
    • https://tewukowil.weebly.com/uploads/1/3/2/7/132741555/zijexarokexapunoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://difuxifomag.rf.gd/awanaym_game_book.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_off0000e756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE756 5148 bytes
SHA-256: 78f33647e7498c467a28954488c1351b54acdf7b90309e7485780e1283d67611
font_01_sfnt_off0000f8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FC 10032 bytes
SHA-256: 4bf434e65bec4d963ab4770225895d49f4ad5ad0e6822af01eea11eab3d7a3b7