Malicious PDF — malware analysis report

Static analysis result for SHA-256 74383ca1c9b0fa71…

MALICIOUS

PDF

106.2 KB Created: 2021-03-26 07:21:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 4420fd5322a83f5a3f199f6c2ff9167a SHA-1: c967bf924bf27014bf563c3a0b9c2403756ce6ec SHA-256: 74383ca1c9b0fa71a80086277ad0f7b153b2487cabbd84d562b48d4db4cf88e4
146 Risk Score

Malware Insights

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

The file is a PDF document that exhibits characteristics of a phishing or scam lure, as indicated by the 'SE_CALLBACK_LURE' heuristic and the presence of numerous URLs. The document body, though heavily obfuscated, contains text related to 'Comcast tv guide decatur il', suggesting it's designed to trick users into clicking malicious links. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://druttle.ru/wix?keyword=comcast+tv+guide+decatur+il PDF link annotation
    • https://wumikedamuzu.weebly.com/uploads/1/3/4/3/134324885/dfe3d93c3d.pdfIn PDF document text
    • http://zoneeuro.pro/what_are_the_data_warehouse_toolsnipnq.pdfIn PDF document text
    • http://hookup154.fun/25929068803ubgql.pdfIn PDF document text
    • https://ripegedabezigiz.weebly.com/uploads/1/3/2/6/132695689/168c48.pdfIn PDF document text
    • http://jizefuli.22web.org/attorney_general_wedding_forms.pdfIn PDF document text
    • http://wepovak.iblogger.org/lewubesuzokonev.pdfIn PDF document text
    • http://buloshnaya.site/wwii_pub_quiz_questions0cajh.pdfIn PDF document text
    • http://titanovyi-filtr.ru/email_writing_exercises6otfm.pdfIn PDF document text
    • http://kunujunekedi.mygamesonline.org/mokuvun.pdfIn PDF document text
    • http://myfirstsite.xyz/acordes_de_piano_para_canciones_tristesnrkbh.pdfIn PDF document text
    • http://sfr-webmail.com/amc_mobile_movie_showtimes_tylerakoze.pdfIn PDF document text
    • http://warowusavi.mywebcommunity.org/turbochef_sota_oven_manual.pdfIn PDF document text
    • http://getsalle.xyz/15901551429an9ju.pdfIn PDF document text
    • https://fuliribak.weebly.com/uploads/1/3/4/6/134681530/losovekun_zasigir_sareratudasi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fusifovizit.rf.gd/32811955327.pdfIn PDF document text
    • http://zexizel.epizy.com/45994919396.pdfIn PDF document text
    • http://wiwesokowam.epizy.com/fevibavimuzunafe.pdfIn PDF document text
    • http://vamavaremimot.atwebpages.com/50019729072.pdfIn PDF document text
    • http://tudulem.rf.gd/broomfield_police_department_accident_report.pdfIn PDF document text
    • http://fojiguxojed.epizy.com/3747564555.pdfIn PDF document text
    • http://wewamamewiler.atwebpages.com/dd_beyond_spells_homebrew.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_off00016045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16045 5224 bytes
SHA-256: eb113ed96558f37b2a5ebf2e0d1be082e8d2b30e304af18edb0d6619e74f6313
font_01_sfnt_off000171f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171F3 12468 bytes
SHA-256: e952c6237cd02578404cc171aaf248af6597b32158dd9fb79377ff1fe2812c93

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