Malicious PDF — malware analysis report

Static analysis result for SHA-256 43a2d8c754a333c6…

MALICIOUS

PDF

73.1 KB Created: 2021-02-23 23:44:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: f70f87ab419d8fa2d9a4cdddcaec7a6e SHA-1: 79ce64509bc53eaa97a37069674b3fa65fd20b27 SHA-256: 43a2d8c754a333c678d1a6793bacbfd3e16232e7fbeb5fe1762124d1e5b3dec0
134 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and ClamAV. It contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The heuristic 'SE_URGENCY_LURE' indicates the document may contain language designed to prompt immediate action, further supporting a phishing or scam pretext. No scripts were extracted, but the presence of external links indicates a potential for downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://maypoin.ru/wix?keyword=greenlight+fire+ant+control+with+conserve PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367941/normal_601a16b1be524.pdfIn PDF document text
    • https://cdn.sqhk.co/wusakituzu/ifibNgj/dragon_ball_legends_hack_ios_1._38._1.pdfIn PDF document text
    • https://cdn.sqhk.co/lizasizova/QgeiaK1/36389463831.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455659/normal_5fe7a56e23599.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410216/normal_5fcbd9e325005.pdfIn PDF document text
    • http://fishland.store/naphtha_reforming_reactiondc7y0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469349/normal_5ff5f360a3160.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472793/normal_600c5163d30cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476152/normal_5fdb78760d783.pdfIn PDF document text
    • http://salonapp.xyz/toshiba_regza_no_signalun6ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485569/normal_5ffef9dd5c0fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469841/normal_6018cc8211012.pdfIn PDF document text
    • http://grusha.space/pivogaluguvowyfibu.pdfIn PDF document text
    • http://creditstar-kabinet.com/notarized_proof_of_residency_lettere6w3x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5fdb8a084d92c.pdfIn PDF document text
    • https://cdn.sqhk.co/vazoguzo/Iihq653/voa_persian_news_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sotixavar.epizy.com/gajawagusijufutovizizu.pdfIn PDF document text
    • http://zekubegem.epizy.com/sozatip.pdfIn PDF document text
    • http://fobegakolu.epizy.com/abdominal_hysterectomy_steps.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_off0000d9d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D8 5328 bytes
SHA-256: 083eebdcfe9c150025a3d71761ac7002598f4418d9b000e83974cf3c558cca7f
font_01_sfnt_off0000ec0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0C 13696 bytes
SHA-256: 5b842133c4b866117e81edad4222856dee62834e18f9fc561190c5060eadfddb

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