Malicious PDF — malware analysis report

Static analysis result for SHA-256 331384092765d1f6…

MALICIOUS

PDF

90.2 KB Created: 2021-03-13 20:59:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 4bb263a664c3354ca96a42644daffc79 SHA-1: 49bbcf0dee4ac72c353fa22d823eb6114c3fac4d SHA-256: 331384092765d1f6c533d5217ce207e280227af77d34368149fab7d2e4aa6818
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, characteristic of a link farm or phishing attempt, with one URL specifically mentioning 'newborn baby girl outfits amazon' to lure victims. ClamAV detected this as Pdf.Phishing.Trojan, and ML classification strongly indicates maliciousness. The presence of multiple external links suggests the document is designed to redirect users to malicious sites, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://lozipotod.ru/strik?utm_term=newborn+baby+girl+outfits+amazon PDF link annotation
    • http://vemusopudin.22web.org/takik.pdfIn PDF document text
    • https://simiwulizolur.weebly.com/uploads/1/3/1/4/131455232/kutizisuguwu_xasaf_jeveg.pdfIn PDF document text
    • https://nedudefo.weebly.com/uploads/1/3/4/3/134389218/wabativep-wuloj-funubukanasu-genudefoxegago.pdfIn PDF document text
    • http://xudisoda.66ghz.com/guidelines_aortic_stenosis.pdfIn PDF document text
    • https://lugonejiborin.weebly.com/uploads/1/3/5/3/135336075/d01de.pdfIn PDF document text
    • https://ginozupil.weebly.com/uploads/1/3/1/4/131411281/0efb4b9dfeb2e9.pdfIn PDF document text
    • https://zizujegaduxopur.weebly.com/uploads/1/3/5/9/135972979/larusodujuwat-nomuxezuki.pdfIn PDF document text
    • https://xonedanafesiliw.weebly.com/uploads/1/3/4/6/134633415/143762.pdfIn PDF document text
    • https://gavititexufo.weebly.com/uploads/1/3/3/9/133997787/18a584dac.pdfIn PDF document text
    • https://tolajugim.weebly.com/uploads/1/3/4/6/134647220/rapasiwivosenusowozo.pdfIn PDF document text
    • http://bukenisefino.mygamesonline.org/learn_japanese_from_zero_download.pdfIn PDF document text
    • https://kesizimi.weebly.com/uploads/1/3/1/3/131398366/javetunozumofifo.pdfIn PDF document text
    • https://zadevadetolilug.weebly.com/uploads/1/3/5/3/135321342/8349329ba5d.pdfIn PDF document text
    • https://zaketedojerobi.weebly.com/uploads/1/3/6/0/136023974/8518460.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/ordinary_annuity_example_problems_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/lab_report_format_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/89777762118.pdfIn PDF document text
    • http://vobujilub.epizy.com/cadillacs_and_dinosaurs_uptodown.pdfIn PDF document text
    • http://sanubexudo.rf.gd/nesetak.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/bowflex_xtreme_assembly_video.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/nawewonekodisalirojetavi.pdfIn PDF document text
    • http://vamejojupilo.rf.gd/dozanumakisexokaja.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_off00012039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12039 5440 bytes
SHA-256: ce678b45a1bc6dd3b46255aa7c1a5c3955a5ce9ee2691cc9a805830cdd557acd
font_01_sfnt_off000132d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132D4 11328 bytes
SHA-256: 2b81c91240fc09feb723c76b7b9fde02af18ca89f838a9cd18b4ff169d726bbe

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