Malicious PDF — malware analysis report

Static analysis result for SHA-256 efa749a170251996…

MALICIOUS

PDF

77.3 KB Created: 2021-03-24 23:48:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 6945d6616b1935ea755d6e548a4f3bbb SHA-1: 4716ce3b6777dd447cb275a2bfe4e38f889442ab SHA-256: efa749a1702519969799bf11385d03df5a005f92076409e4be218798625ca775
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous embedded URLs, with at least one identified as a redirector to known malicious infrastructure. The file's structure and embedded links suggest it is part of a phishing campaign, likely attempting to lure users to sites that host further malware or phishing content. No scripts were extracted, but the PDF's nature as a redirector is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/wix?keyword=math+3+honors+curriculum In PDF document text
    • https://mibinataxufix.weebly.com/uploads/1/3/1/4/131438539/c5a5e9815.pdfIn PDF document text
    • http://pexarinolal.mypressonline.com/nitusuwatofabikivisises.pdfIn PDF document text
    • https://titerafutar.weebly.com/uploads/1/3/0/7/130775646/ribinibituviz-zugujaf-xizexiwes-zajunopazeja.pdfIn PDF document text
    • https://panebafizi.weebly.com/uploads/1/3/4/3/134365464/2988454.pdfIn PDF document text
    • https://fukubumo.weebly.com/uploads/1/3/4/0/134016705/basuvumabawefe-goxexilukoju-samam-jivejepurifino.pdfIn PDF document text
    • https://libotavod.weebly.com/uploads/1/3/0/8/130813055/videbabalagedo-newiwibudusu-lapezukobes.pdfIn PDF document text
    • https://bopexetijajab.weebly.com/uploads/1/3/1/4/131411078/gifurejata.pdfIn PDF document text
    • https://bakadowo.weebly.com/uploads/1/3/1/3/131380427/c896c2d.pdfIn PDF document text
    • https://cdn.sqhk.co/tuledapozato/Fheibid/50182781981.pdfIn PDF document text
    • http://bimizuzi.sportsontheweb.net/42442818299.pdfIn PDF document text
    • http://jenuxijaf.mygamesonline.org/ways_to_describe_weather_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/iIAiheM/shark_attack_videos_on_humans.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/74852100551.pdfIn PDF document text
    • https://xovuxajewilim.weebly.com/uploads/1/3/0/7/130775567/8713346.pdfIn PDF document text
    • http://rakapugijumub.sportsontheweb.net/company_structure_example.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/b5d93646-d578-4d8c-b1b5-d56484601a2d/30670302707.pdfIn PDF document text
    • http://lebusepuwiri.atwebpages.com/101_toughest_interview_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d370b77d-a8b5-4735-a425-becc12f12c9d/44581489249.pdfIn PDF document text
    • http://lojibovel.myartsonline.com/blood_guts_and_glory.pdfIn PDF document text
    • http://gototura.myartsonline.com/why_list_your_company_on_stock_exchange.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_off0000ede8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE8 5208 bytes
SHA-256: 1ba9c045090b9211fa3c7541c30cbc0057fdaa322856229527eda01b12bc6998
font_01_sfnt_off0000ff7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7E 11352 bytes
SHA-256: f59f12b9b74034c6927c1c9e3bb0f8824c6e9a9cf1bdb8801da1341c758d32bd

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