Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f29b97fdeac9e4…

MALICIOUS

PDF

106.7 KB Created: 2021-03-20 15:07:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f58c20f037ce165ed7f811486ec1d2a8 SHA-1: 464b469eb3f9669b87fe546493fea62d52de8bf5 SHA-256: 65f29b97fdeac9e4bc163888d81996779fa126558918690fb21ec92e845c1d84
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with one pointing to a suspicious domain ('fokemale.ru') that is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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 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://fokemale.ru/123?utm_term=hegemony+meaning+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4401976/normal_5fce937766828.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483082/normal_604184720a548.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451220/normal_5fee13b3d730f.pdfIn PDF document text
    • http://diporesorojina.scienceontheweb.net/abdomen_agudo_elsevier.pdfIn PDF document text
    • http://womirewuzakuf.sportsontheweb.net/sandman_neil_gaiman_netflix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379856/normal_5fc8d22c4b293.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404730/normal_600213d481a58.pdfIn PDF document text
    • http://kevogam.22web.org/information_overload_statistics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_603b18378da2e.pdfIn PDF document text
    • http://kilekapalovuzo.getenjoyment.net/11681465407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383679/normal_60329bdd54679.pdfIn PDF document text
    • http://vevebopawo.mywebcommunity.org/breastfeeding_notes.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
    • http://gipujusabobax.rf.gd/morebipupetojitezawutule.pdfIn PDF document text
    • http://konivad.epizy.com/photoshop_cc_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/549676ab-b72a-467c-9f9d-86541d31163e/nursing_theorists_and_their_work_martha_raile_alligood.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/hp_elitebook_8540p_battery.pdfIn PDF document text
    • http://siroluga.epizy.com/bhai_behan_ka_pyar_hai_ringtone.pdfIn PDF document text
    • http://mizetum.onlinewebshop.net/kagejinudivuzabofutezid.pdfIn PDF document text
    • http://lakugarim.rf.gd/besmirched_kcd_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/243e26a9-1014-402a-8e24-ff852d1d4373/what_should_i_name_my_white_girl_dog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cb6f726-3ebd-4682-8e61-fba83e5bd85a/races_of_destiny_3.5.pdfIn PDF document text
    • http://mawokale.myartsonline.com/interview_questions_for_maths_teacher.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001288d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1288D 3232 bytes
SHA-256: d04c2604fad631ce19ff387ef83f7db7c5a418506f9074dde1e47394558548bc
font_01_sfnt_off00013405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13405 4828 bytes
SHA-256: 7c4acb9325a3c8aff3283d492da0282b1d222bd872ee3a733c71ee9b0b0559d6
font_02_sfnt_off0001445a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1445A 16652 bytes
SHA-256: 76c75013f57415020bb8a5bfefc19737442e7c9fbb7e520276eb7e730afca0fa
font_03_sfnt_off000177e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177E1 16060 bytes
SHA-256: 99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953
font_04_sfnt_off00018c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C7B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c