Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed0e1216a8203ee…

MALICIOUS

PDF

70.5 KB Created: 2021-05-29 16:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 88f1a53d036e1d1ba5f771e404545a97 SHA-1: 56369efd2f944b72f88be86350a11000a7e0444e SHA-256: 0ed0e1216a8203ee43ff1efbff3e55ab1058625844708ee1c67c3692a8b2a581
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/123?utm_term=introduction+to+the+compound+microscope+lab+answers PDF link annotation
    • https://jivafizet.weebly.com/uploads/1/3/4/7/134743279/xevenuwabata.pdfIn PDF document text
    • https://xizotikozuza.weebly.com/uploads/1/3/4/5/134587863/texewe_degulojowapu_wuvup_zowopevevuva.pdfIn PDF document text
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/1234834.pdfIn PDF document text
    • https://terovudomam.weebly.com/uploads/1/3/1/4/131406893/2376925.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481053/normal_5fedacff0cf58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456135/normal_60508c092ca30.pdfIn PDF document text
    • https://notesorujul.weebly.com/uploads/1/3/1/4/131407176/pubupajaso-fifadatizi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b2288ef-3ad6-4fac-80d8-3d3ff30bd3f2/club_car_golf_cart_parts_on_ebay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c77f486-0253-484b-844d-94130eeba51e/film_lookbook_samples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59970983-4802-4ff5-b78a-82525f57c8e1/should_high_school_graduate_be_capitalized.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2911fe06-35df-4afc-8e12-6da1a33debf9/46258549403.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0e6d4d7-3809-4755-86ec-ff89eac17c89/46190346163.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2d855f3-7f09-49b2-addc-bee8a27beb38/6177578056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dd7d7f1-2283-46bd-95b7-88148a42dc60/52752064371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6c3e5e9-9663-4206-a379-8ee4773b0d06/kenmore_he2_dryer_start_button_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37cc55a1-dd6c-4f00-b238-b726269b2dcb/nalejisubozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/410a7e3a-82b7-4618-876f-5aaffa6db60a/the_jordan_rules_book_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77a06ecd-3b11-4dab-84fb-456661957d57/budeberifutepazexubes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7408e4d-7c5e-4d37-9ecf-048b05f1d41e/fitokebapugisiketaxudono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad5586fa-c274-4f2f-bf8a-cb627dca183d/7_love_languages_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e89a94a-0b59-4809-8c65-0a6579c9135b/4970706905.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_off0000d3f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F3 5480 bytes
SHA-256: 89bf4caf698f8582fa264fead7eb0b6e265295f36241867f1939cfb73c57235f
font_01_sfnt_off0000e670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE670 10540 bytes
SHA-256: ca41dec1ae440024b82dd504be03036b9cec4bdfd0610f69a89b774f5b85d1f3