Malicious PDF — malware analysis report

Static analysis result for SHA-256 371114ebbb568249…

MALICIOUS

PDF

86.7 KB Created: 2020-11-23 06:09:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 29730ebda3189ede3da7841e05a85bf2 SHA-1: 92390724b693c4cfd870a98c15e26a24c23f6052 SHA-256: 371114ebbb56824946934d3663631a7d92a1445052bf5ccdb505b236de1be299
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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=badrinath+ki+dulhania+video+song++likewap In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383321/normal_5f98915ab8fe4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381095/normal_5fad98748ab38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485570/normal_5fabf20b3b18f.pdfIn PDF document text
    • https://pezitojuxesuvog.weebly.com/uploads/1/3/4/6/134608136/xasikav-zufowunidepad-sazabolotutet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372072/normal_5f998ab0d2a9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_5fa4876cbe2b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379355/normal_5f9e214470039.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dusubonifu/gotirulefetidujo.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/barbell_workout_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/facebook_business_cover_photo_template_psd_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/kenukem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/671e3e88-69f2-4ee4-8b6f-26070251ca52/1082173145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/104be7fb-a8d7-4efb-848c-5c99cf7f4559/wezutesajezodova.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c7865da-ee83-422d-b974-542246e0f62c/electro_sun_dehydrator_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B2 5368 bytes
SHA-256: 3e2fda92cb4cbbd8e39aa4e6f0b952c32ab9a402df91103e89b23b4b26090ed0
font_01_sfnt_off000102fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102FC 11728 bytes
SHA-256: fad0d8e568427254fda63d4b7e63c258c2425efbb157c779a7eafa46be25172f
font_02_sfnt_off000129e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E9 16228 bytes
SHA-256: d5d85e3aaaa5992967d3bcc314d74791cb71fca714f8331f5cf69889fcc7a56c
font_03_sfnt_off00013f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F53 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.