Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2bc082aaffbaab…

MALICIOUS

PDF

131.6 KB Created: 2021-02-20 08:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4fae5779a8eac3f3d34b4ea2808b2166 SHA-1: 36ea714d1c7d6923a1155bab0b024b57e04a3881 SHA-256: 0e2bc082aaffbaabecf546cc143e9e0d6258ab7a85146131bc58f0769c3d4308
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many of which are to PDF files hosted on various domains, suggesting a link farm or redirection scheme. The primary external URI points to a URL that mimics a search query, likely intended to deceive users into clicking through to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://seumenha.ru/wb?keyword=how%20does%20auto%20air%20conditioning%20work%20diagram PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376105/normal_5ffc61de438da.pdfIn PDF document text
    • https://zemapefim.weebly.com/uploads/1/3/4/4/134485651/558790.pdfIn PDF document text
    • https://dazuzoboda.weebly.com/uploads/1/3/4/0/134017564/1855689d597c9.pdfIn PDF document text
    • https://rifodajawu.weebly.com/uploads/1/3/0/7/130739776/kisipedatuxa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393779/normal_5ff003176100f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469358/normal_5fc8cfb6dfc7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417318/normal_6007dfba82dec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443362/normal_602ebabc2b9ff.pdfIn PDF document text
    • https://kifeketefisub.weebly.com/uploads/1/3/5/3/135347095/gepowovarijubi_buselepifowis_sulewugozunonu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391317/normal_600c529a90466.pdfIn PDF document text
    • https://senugosuka.weebly.com/uploads/1/3/1/4/131454109/zowojos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457839/normal_600ef75442cda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481516/normal_5fea2806b681b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489409/normal_60276e2132990.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/gotitibekovi/4967050290.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/asccp_guidelines_positive_hpv_with_negative_pap.pdfIn PDF document text
    • http://lapesuzimu.epizy.com/weathering_with_you_anime_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/wejasalewedamexetok.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/76410795655.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/xelozagupanugadopoket.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B5D2 5344 bytes
SHA-256: 3dc0bde95ff042c43cefb40a18ef365e7ab4ff6840d6ee5e314c380d7815acaf
font_01_sfnt_off0001c7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C7FB 12308 bytes
SHA-256: 35633c087a64e757778e4e3b1a418c0da4deca59e67f9d7b2f8c6603c81e892f
font_02_sfnt_off0001f10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F10F 6128 bytes
SHA-256: 2955eb5d19ae652aafc8477329a70785705b74d81ddb59402fa18e16935e8dc1

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