Malicious PDF — malware analysis report

Static analysis result for SHA-256 02053f81ee34a82e…

MALICIOUS

PDF

91.3 KB Created: 2021-03-19 10:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 14ee6024880a2ed00afe88fcffbce998 SHA-1: 9bfcac9b547690b9da9e9f18b48ae99ee0aa2384 SHA-256: 02053f81ee34a82ee7bb80c625aa2ee4b2a928fba4bcebec87df252536843ccb
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by both ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation scheme. One of the primary external links points to a URL that appears to be part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • 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://xezojetit.ru/award?keyword=alice+miller+drama+of+the+gifted+child+pdf PDF link annotation
    • https://zisinifaja.weebly.com/uploads/1/3/4/5/134599776/4534665.pdfIn PDF document text
    • https://telogedibosujo.weebly.com/uploads/1/3/1/4/131438044/5840619.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/lomed.pdfIn PDF document text
    • https://tukumexof.weebly.com/uploads/1/3/4/7/134721389/jogez.pdfIn PDF document text
    • http://pawusofadezozep.22web.org/15464558755.pdfIn PDF document text
    • http://metoxegid.mygamesonline.org/formato_de_nmina_en_blanco_para_rellenar_excel.pdfIn PDF document text
    • https://lesitoziperitij.weebly.com/uploads/1/3/4/3/134381346/4432664.pdfIn PDF document text
    • https://guxeximufi.weebly.com/uploads/1/3/4/2/134235584/lifafabulavim.pdfIn PDF document text
    • http://degakak.sportsontheweb.net/conditional_statements_worksheets.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/0ad372f6-d68e-4b3b-888f-30772d34b30f/vovapupivuwine.pdfIn PDF document text
    • http://kemesuxaw.myartsonline.com/diwes.pdfIn PDF document text
    • https://cb38ef3f-1f2c-4622-8962-dca261660167.filesusr.com/ugd/3ae201_668efda2e1a04357ba62b9f88cdb8005.pdf?index=trueIn PDF document text
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_0a0ba49de6884f59929d6d25b91b7530.pdf?index=trueIn PDF document text
    • http://sarigeselos.epizy.com/geometria_analitica_formule_retta.pdfIn PDF document text
    • https://24b051fc-04af-4e2d-8b9e-4e75c06063ec.filesusr.com/ugd/1a488c_15f4d2f53975462bae3dc31b59448234.pdf?index=trueIn PDF document text
    • http://lumawasisoxo.rf.gd/96036841698.pdfIn PDF document text
    • https://a4067306-84c0-45ce-9c36-3cbb795fcb37.filesusr.com/ugd/d5b970_36f483a41a3044e39495d84b2a92849e.pdf?index=trueIn PDF document text
    • http://tetexamafikej.epizy.com/60425490464.pdfIn PDF document text
    • https://cd753cf5-d90a-4073-9c55-931a76e81761.filesusr.com/ugd/8826df_78b41c453c114d9a9dd28df604d95663.pdf?index=trueIn PDF document text
    • http://vuzogumav.rf.gd/favabomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c421cae-73bb-43c4-87f4-f2b166bb5fae/qlikview_beginners_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36638e19-9c41-4b81-a956-459c989fb928/mazezadasaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e2ec0bf-068f-4445-b09d-f013f9a7a9e6/matter_word_search.pdfIn PDF document text
    • http://muwadobekele.rf.gd/57704973089.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/722bfc14-50d9-49e9-970c-8ec372c8f927/lejabavev.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_off000123fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123FC 5380 bytes
SHA-256: 6b39dbeac5a0c58e2d36d0eb5da6a4872dee8d4e956388e8a2744e5aef01ee5b
font_01_sfnt_off00013625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13625 12180 bytes
SHA-256: 46d327b664d03a9f7b6c5044411991a96bb86af3934a9177d07e2202358950f3