Malicious PDF — malware analysis report

Static analysis result for SHA-256 501047cef0011338…

MALICIOUS

PDF

74.2 KB Created: 2021-05-12 23:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 47b02054ac111822d0def3b84dddb268 SHA-1: 7ea7cdbd33235fb4b4e5de910456a26adfc8c365 SHA-256: 501047cef0011338d3a5288e2b50c7cfa29931a98170c9a55f6f37da72c6c47f
136 Risk Score
Tags
free-cdn-ebook-manual-lure

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 phishing or trojan threat. It contains a high-priority heuristic indicating an SEO redirector link, specifically `https://seumenha.ru/strik?utm_term=2012+jeep+grand+cherokee+led+fog+lights`, which is likely used to lure victims into clicking on a malicious link. The document body, though heavily obfuscated, appears to contain metadata related to the wkhtmltopdf tool, suggesting it might be a generated document for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=2012+jeep+grand+cherokee+led+fog+lights PDF link annotation
    • http://jijuduli.mywebcommunity.org/libros_de_alfonso_lopez_quintas_en.pdfIn PDF document text
    • http://community-day.ru/57883334527xwngr.pdfIn PDF document text
    • https://cdn.sqhk.co/pabilere/hR7ha87/rarotupasatodolufusu.pdfIn PDF document text
    • http://faponabon.mygamesonline.org/belinda_blinked.pdfIn PDF document text
    • http://gelokan.sportsontheweb.net/34635545571.pdfIn PDF document text
    • http://dumigegin.medianewsonline.com/english_afaan_oromo_dictionary.pdfIn PDF document text
    • https://cdn.sqhk.co/xedaberetaj/tlkgdjf/72282293936.pdfIn PDF document text
    • http://wildboost.club/kiwesowejafapufozubo4ou60.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/jeromisixinolib/jkbose_datesheet_12th.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dd66028-0df7-4496-bcd2-070abc027644/getofesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be5647b7-7109-48e1-8c01-891158c3df69/infinix_note_6_price_in_nigeria_jiji.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/self-determination_theory_argues_that_which_three_needs_can_explain_much_of_human_behavior.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/36375067443.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/best_telugu_hd_movies_free.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/35874537428.pdfIn PDF document text
    • http://gefuwaw.atwebpages.com/11800454351.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C9 5788 bytes
SHA-256: 3e0bee53c2e49c3c68c4f415c4c95df4e4fccec78f148c5ddecf48af45a4f70b
font_01_sfnt_off0000f88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF88B 10260 bytes
SHA-256: 632e755f14fdf69240b04b18ca2133f27a89726068b38ee956714a38892bc879

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