Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1dc5eb9ae90338…

MALICIOUS

PDF

90.7 KB Created: 2021-03-22 17:03:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 6001a31701c5d1cc50f39848f7b4eac0 SHA-1: caf57e0da27d199de219583863e956d905e54d85 SHA-256: 0c1dc5eb9ae9033847068a95a2adcbdc319b4db82fd7e3de0190eba01c786135
136 Risk Score

Malware Insights

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

The PDF file contains a high-severity heuristic indicating it is a phishing lure for free software downloads. The embedded URL, https://maypoin.ru/123?utm_term=apache+openoffice+for+android+tablet, is directly linked to this malicious activity. While no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest an attempt to redirect users to a malicious site, likely for malware distribution or credential harvesting.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=apache+openoffice+for+android+tablet PDF link annotation
    • https://cdn.sqhk.co/puwipaneke/NIwGZhb/86717109765.pdfIn PDF document text
    • http://tipaxoj.66ghz.com/jikepume.pdfIn PDF document text
    • https://cdn.sqhk.co/sevimifogu/BhgdgjR/aspiration_pneumonia_review.pdfIn PDF document text
    • https://cdn.sqhk.co/jenireni/jgiebrl/mujiruterizajuzol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vemaxuvigufu.epizy.com/wojerezapipazujilizegi.pdfIn PDF document text
    • http://jezuwujitek.epizy.com/nidazapexonasopipo.pdfIn PDF document text
    • http://xexagum.epizy.com/sapibu.pdfIn PDF document text
    • http://denuvila.rf.gd/l_acide_sulfurique.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/21120908102.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/car_pc_games_free_full.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/99209321861.pdfIn PDF document text
    • http://jutenolare.rf.gd/tus_zonas_erroneas_audiolibro_descargar_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/pefigimenap.pdfIn PDF document text
    • http://rudurugineme.epizy.com/information_synonyms_news.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/xaxixiboru.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/what_is_after_unravel_me.pdfIn PDF document text
    • http://kokozebe.rf.gd/autoexec._bat_windows_98.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/algorithms_dasgupta_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/31833254580.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001126b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126B 4980 bytes
SHA-256: 971a4e0a4ded9e9c76822285b5ca4aa76b914338aff43aaae4528786c95e430d
font_01_sfnt_off0001233d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1233D 13548 bytes
SHA-256: 82fc213ba9924cb036728058ee9ebaeaf45b912ef76f574be4a30e76a7a74ddb
font_02_sfnt_off00014eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EEA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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