Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda8cacdb5ca78a6…

MALICIOUS

PDF

77.4 KB Created: 2021-03-03 19:45:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3ea891270961cd1b74e77de16bdde11f SHA-1: 5498e9b5d79f36688b654f8c0521d8ea26b0b579 SHA-256: bda8cacdb5ca78a6527e34d286effdc0f28f32a3ef00f4a78abbe659a64986e9
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute malicious content or phish users. The primary lure appears to be related to 'funding for a non profit organization', directing users to a URL that includes a UTM term for this topic.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gimoguvi.ru/strik?utm_term=how+to+get+funding+for+a+non+profit+organization PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4530151/normal_5fd3b029221cf.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/zoom_h4_handy_recorder_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410186/normal_601814718b8b0.pdfIn PDF document text
    • https://zibakuponitek.weebly.com/uploads/1/3/5/3/135303957/pezowo-xijid.pdfIn PDF document text
    • https://cdn.sqhk.co/wepuvumug/BbTIheK/ancel_x5_user_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403531/normal_601ff09114f69.pdfIn PDF document text
    • https://bimuwalunamen.weebly.com/uploads/1/3/1/3/131384226/9792119.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380083/normal_5fcd3eefd5089.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450723/normal_602af22277a7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413707/normal_5ff775d89bb52.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/hcbZjcP/major_mayhem_2_mod_apk_hack_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464523/normal_5ff2b1dd5adb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452626/normal_600363f188de1.pdfIn PDF document text
    • https://jikodidujur.weebly.com/uploads/1/3/5/3/135319234/poxupesu-wevikanimuzum-nofopufur-vojizodujesumeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471995/normal_5fe78a5e14b29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tulajadulixo.myartsonline.com/facts_about_angles_in_parallel_lines.pdfIn PDF document text
    • http://nununad.myartsonline.com/what_are_the_small_indentations_on_a_golf_ball_called.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_off0000f2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AA 5104 bytes
SHA-256: c7d39dd47457b359bf9bb6fa347c589e3757af013fd8cd349e5842fe0981ff6e
font_01_sfnt_off00010439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10439 10564 bytes
SHA-256: cce302baf050d35afe8d41fbc0249b3e7f5a2546155a72584abe4b4c1b7908dd

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