Malicious PDF — malware analysis report

Static analysis result for SHA-256 b80edd05e2882c38…

MALICIOUS

PDF

73.7 KB Created: 2021-04-22 18:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: cdf9b0b19ccbe84981883a4d896dd12a SHA-1: 056c03f573b4dd6fcb980d88aa0b6a8a09e2873b SHA-256: b80edd05e2882c385b112c132001143469e508b08633bb754f17b7418ac51c7e
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. The document body, though heavily obfuscated, contains a URL that appears to be a lure for users searching for specific content. The presence of numerous external URIs, many hosted on disposable domains, further supports a link farm or phishing attack pattern. The embedded URLs are likely used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/strik?utm_term=what+age+are+magic+tree+house+books+for PDF link annotation
    • https://walanugenaxoduf.weebly.com/uploads/1/3/5/9/135964425/a93d9aa7150334.pdfIn PDF document text
    • http://parkingtest.xyz/videjasovipevisesegiwokuagtl.pdfIn PDF document text
    • https://mixunolonuwoja.weebly.com/uploads/1/3/0/9/130969204/viroxalolox-wubisedexewig-nazugoz-tivawiribo.pdfIn PDF document text
    • https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/d7598741.pdfIn PDF document text
    • http://vopagokiniki.mypressonline.com/convenio_de_paris_medio_ambiente.pdfIn PDF document text
    • http://duplicwcnj.space/2600686536014sc9.pdfIn PDF document text
    • http://xazapefunel.getenjoyment.net/sivebosinuwelagafosopino.pdfIn PDF document text
    • http://epipog.com/autocad_2016_tutorial_for_beginnerspuxus.pdfIn PDF document text
    • http://inmyshtangen.xyz/35456926621oc2on.pdfIn PDF document text
    • http://kdghy.online/gowukuwoso4whyk.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/865828.pdfIn PDF document text
    • http://luwinilulurop.mywebcommunity.org/pejuvetufemogibumuzodudo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rodumotafab.rf.gd/wibogutisogixawakagepe.pdfIn PDF document text
    • http://firixafuzive.rf.gd/how_to_pick_sentry_safe_lock_box.pdfIn PDF document text
    • http://luvebex.rf.gd/software_system_specification_template.pdfIn PDF document text
    • http://padusij.onlinewebshop.net/what_height_should_a_bench_be.pdfIn PDF document text
    • http://wiloradakuno.onlinewebshop.net/arabic_numbers_1_100.pdfIn PDF document text
    • http://biwabuw.epizy.com/supra_negritude_gratuit.pdfIn PDF document text
    • http://dafevuzadolax.epizy.com/wifawoxa.pdfIn PDF document text
    • http://xilawon.epizy.com/ariel_the_little_mermaid_sisters_names.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_off0000dff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF3 5480 bytes
SHA-256: 94cc395d33454d748f53d5cdda56796d1ecd830b7ed58b5c566a4131b36f09ee
font_01_sfnt_off0000f281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF281 10928 bytes
SHA-256: 0ae44cc9e59541d635d5c90e8f8fc771c5c57aae19c3c93ce24f9c2e09acbd65

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