Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad13b7dd552714a…

MALICIOUS

PDF

70.6 KB Created: 2021-05-19 03:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 96e3ba6f68b4cd4c8e1f675d1c1cec91 SHA-1: 71353761454abfd1ac6d9506871283238c32f1a3 SHA-256: 1ad13b7dd552714ac027dab2a745225e90ee25c43373b55475857cf3afb3b6a5
186 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 a high likelihood of malicious intent. It contains a significant number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded URLs likely lead to further malicious content or phishing pages.

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.
  • 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://pelibifir.ru/strik?utm_term=us+imperialism+political+cartoon+analysis PDF link annotation
    • https://zurukonovode.weebly.com/uploads/1/3/1/3/131379219/fb92c.pdfIn PDF document text
    • https://bodokevusigow.weebly.com/uploads/1/3/2/7/132740435/kerad_jafanixunifi_noverutigosix_pivalulimumide.pdfIn PDF document text
    • https://vokugovu.weebly.com/uploads/1/3/4/5/134598923/sejufukebenu.pdfIn PDF document text
    • http://pimazisiperej.iblogger.org/bonabizedimudopifab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392220/normal_603a21bc774ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492257/normal_6063e29ca3adc.pdfIn PDF document text
    • https://tefajakitom.weebly.com/uploads/1/3/1/3/131378990/5483505.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385197/normal_5ff698d3b7d11.pdfIn PDF document text
    • https://ludugekokokak.weebly.com/uploads/1/3/5/3/135313409/bixez.pdfIn PDF document text
    • http://fulilip.iblogger.org/belkin_n300_driver_windows_7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375077/normal_600cd166c7e57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411702/normal_5ff8a887d79be.pdfIn PDF document text
    • https://kumupesefutevun.weebly.com/uploads/1/3/4/4/134463509/domagowojebi-kuxoten-buziv.pdfIn PDF document text
    • https://filukekab.weebly.com/uploads/1/3/4/4/134478490/4546876.pdfIn PDF document text
    • https://kuvopesi.weebly.com/uploads/1/3/2/3/132303138/965156.pdfIn PDF document text
    • https://vakurizilobiwil.weebly.com/uploads/1/3/0/9/130969742/wagovikifo-xuwumo-repilijibupanod.pdfIn PDF document text
    • https://dofolemabumef.weebly.com/uploads/1/3/4/4/134458616/3458539.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455907/normal_5fcbea79073e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_60551ebf5f87d.pdfIn PDF document text
    • https://jidisoluko.weebly.com/uploads/1/3/6/0/136097174/wuvamapani-xajovo-nefadujabas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sevezogare.rf.gd/python_2._7._16_64_bit.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_off0000d56f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56F 5172 bytes
SHA-256: d9a213b0d27ced990501f977cc3dc95dc99b55f692c5675238201aa525cf3b9f
font_01_sfnt_off0000e6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F9 10520 bytes
SHA-256: 1170378ece93a4570e4a37e92a692ee52afb10a52bda2c9339e093671b98e22b

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