Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d7d26296ef64deb…

MALICIOUS

PDF

77.1 KB Created: 2021-02-15 10:44:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: eab10dc04e5fa2c2f6d00db4584c7d3c SHA-1: db8f5d71b8d880f5e8948a505a469bdd53847396 SHA-256: 6d7d26296ef64debe378369e0d432874cbb160f494c0a60d4f0283ec153b6025
216 Risk Score

Malware Insights

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

This PDF document contains a link farm and impersonates Microsoft to lure users into a credential phishing scheme. The primary malicious URL identified is https://ziralupaw.weebly.com/uploads/1/3/1/3/131379221/8180803.pdf, which is used as a redirector. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the heuristics strongly indicate a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://ziralupaw.weebly.com/uploads/1/3/1/3/131379221/8180803.pdf.
  • 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://jacksth.ru/123?utm_term=can%2527t+create+xbox+live+account+on+xbox+360 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376857/normal_60276069a4625.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393364/normal_5ff2621637f88.pdfIn PDF document text
    • http://prizinsta365.online/26298568685rsidc.pdfIn PDF document text
    • https://ziralupaw.weebly.com/uploads/1/3/1/3/131379221/8180803.pdfIn PDF document text
    • https://vufupobuzalezu.weebly.com/uploads/1/3/4/8/134853030/bivowomufaruk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450038/normal_5fe112d58eb20.pdfIn PDF document text
    • http://instahelpforbusiness.com/jukolagoridoludezitw9ik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449417/normal_5fcf4b024d7f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476420/normal_6006f4f402f74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412891/normal_60129c8c4c6bd.pdfIn PDF document text
    • https://wuvotawek.weebly.com/uploads/1/3/4/8/134872633/8850199.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366397/normal_5fd20179787de.pdfIn PDF document text
    • http://sun-italy.space/41164230071zeck2.pdfIn PDF document text
    • https://xonatusapu.weebly.com/uploads/1/3/5/3/135391421/bugaf_wuxakewiw_zufuvud_sotinu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406466/normal_6017a65456721.pdfIn PDF document text
    • http://skameyki.club/piparuwikbq8ps.pdfIn PDF document text
    • http://crubr.space/pudalerukefulolod1skmr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://panurimo.epizy.com/aditya_verma_songs_free.pdfIn PDF document text
    • http://dibadedogiw.epizy.com/alameda_county_birth_certificate_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/7781190009.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_off0000f0a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A8 5284 bytes
SHA-256: 7c2009f98ec199c17881a29c713f19ab3a342e4620b752206dd54e7bc403d002
font_01_sfnt_off000102b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B5 10688 bytes
SHA-256: 6d8e9cc2a36405829e077a615fee1b6daca7845a91a7f4394a3d3d76f1ba44ed

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