Malicious PDF — malware analysis report

Static analysis result for SHA-256 00778dea3005d80a…

MALICIOUS

PDF

71.6 KB Created: 2021-04-03 09:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d598706a7f0505b417a52e9702a691b2 SHA-1: 6b6366b686b88029211b8eef353f35e50928b03a SHA-256: 00778dea3005d80a1958302533c30b3390390703e054fc1ebd2cbf9285343195
184 Risk Score

Malware Insights

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

This PDF file contains numerous links to external websites, with one specifically identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URLs and the PDF structure suggest an attempt to trick users into visiting malicious infrastructure, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://dafemum.ru/strik?utm_term=domino%2527s+cheese+pizza+ingredients In PDF document text
    • https://gojelubimutur.weebly.com/uploads/1/3/1/3/131384605/zipaxotuw_bowesumesujix_pofejadunur_dipuvasa.pdfIn PDF document text
    • https://budigalaxob.weebly.com/uploads/1/3/5/3/135313384/5894256.pdfIn PDF document text
    • https://cdn.sqhk.co/kevovevude/jgjfLxe/promised_land_state_park_camping_pickerel_point.pdfIn PDF document text
    • http://wowogobofomufu.mygamesonline.org/multivariate_normal_numpy.pdfIn PDF document text
    • https://dalupapixoriwu.weebly.com/uploads/1/3/1/4/131438121/zaselipoki_refurukol.pdfIn PDF document text
    • https://ninusava.weebly.com/uploads/1/3/1/4/131436980/tumenizoputi.pdfIn PDF document text
    • https://cdn.sqhk.co/riragimi/ghhjdDT/judicial_review_court_case_examples.pdfIn PDF document text
    • http://jajuviramigawo.medianewsonline.com/90995845867.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/iJsiaHB/poem_neighbors_friendship.pdfIn PDF document text
    • https://lisogawe.weebly.com/uploads/1/3/5/3/135312855/225446.pdfIn PDF document text
    • https://warevinigipa.weebly.com/uploads/1/3/4/8/134898994/kosajerexiv.pdfIn PDF document text
    • https://cdn.sqhk.co/joxudilabi/4hbiic6/zeluwakofegasajonum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tizeruxabono.onlinewebshop.net/ruziwuwuxujegigotalerine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b6fcf05-2f33-46c4-9331-499fb4cdbf7a/wuzonubamabewunik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48f99d37-b0a9-47ef-b80a-c90316f0df7d/star_citizen_gameplay_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa28719e-e5da-4a83-98bd-e296b384e421/92660968732.pdfIn PDF document text
    • http://fovawipemezipu.myartsonline.com/6770705168.pdfIn PDF document text
    • http://wifofevowogak.onlinewebshop.net/bug_out_bag_checklist_family.pdfIn PDF document text
    • http://xufoziminep.onlinewebshop.net/73751716545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d32ecabe-6807-49fe-bfb0-ed94ef6fd665/zemugepexokiginuvorip.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_off0000d9f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F6 5536 bytes
SHA-256: a012ef4117ae16c5952144254f18c52c3c9b1cd84111c2a17f2301eae23e3e5c
font_01_sfnt_off0000ecb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB6 10568 bytes
SHA-256: d3ad44cfaaa695db17dd6924085555bafbd6e7ff3d1a155d834b022663e245a4