Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed03411ea5c69293…

MALICIOUS

PDF

73.5 KB Created: 2021-02-09 15:27:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ef1c706470addce5ab7c13dc75c4c484 SHA-1: 8ef25423f31603adf184a61260fe12a24cfa8c6e SHA-256: ed03411ea5c69293f09c0e6a9ae88c6059f370c9855ff100bea6dc036039470b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for a large external link farm. The embedded URLs and the PDF structure suggest an attempt to redirect users to a network of sites, likely for phishing or malware distribution. While no scripts were directly extracted, the PDF's nature and the presence of numerous external links indicate a malicious intent to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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.
  • 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=angular+4+material+admin+template+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367960/normal_60017d8b2cf24.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/hdzhcjh/boom_beach_mech_troop_levels.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481170/normal_6021f88cdad5e.pdfIn PDF document text
    • https://dawofatodir.weebly.com/uploads/1/3/4/7/134756430/robafevagikonel-zexilivojix-loduzitenob-luruzirovedomi.pdfIn PDF document text
    • https://fojowixejomad.weebly.com/uploads/1/3/2/6/132681658/fidev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486566/normal_6001efdd8e960.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/hcLdjgR/food_wars_recipes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467030/normal_5fe0318914e76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_600e362906327.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459320/normal_5fe44ea3a66c1.pdfIn PDF document text
    • https://dudunetexuzo.weebly.com/uploads/1/3/1/3/131379759/batepikemudu.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/hegdkia/reposteria_mexicana_pastel.pdfIn PDF document text
    • https://kesegupopu.weebly.com/uploads/1/3/4/1/134131766/816e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372735/normal_5fc60d0accc5d.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/musoxifuvitalo/chrome_extension_android_vpn.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/maithili_shiv_bhajan_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/ketepup.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/sweet_child_images_hd_free.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_off0000e40b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40B 5260 bytes
SHA-256: 417e547ab41ffd43649e21d8d04b9765d33368df7bb8b6e1d8cb07367df9548e
font_01_sfnt_off0000f5e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E5 10264 bytes
SHA-256: d8adb9bc302fe089211a240bb54fa43d599c98f3e4a3314e0e984414c5400489

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