Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d2007dced6d837b…

MALICIOUS

PDF

74.8 KB Created: 2021-02-26 03:25:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ddb26343bb60db9a507be1ca690c65c6 SHA-1: 3dfbf2dc79e919f691753d88fcf1892796e7fd36 SHA-256: 5d2007dced6d837b0958d9e9590840dd23e0e78506ea1397788f52a8206e3611
136 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ClamAV and an ML classifier as malicious, specifically identified as a phishing trojan. It contains an external URI and an image lure that redirects to a URL, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'call of duty modern warfare patch notes', likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=latest+call+of+duty+modern+warfare+patch+notes PDF link annotation
    • https://cdn.sqhk.co/jumupebuvi/aM3ZjbS/4399166031.pdfIn PDF document text
    • https://cdn.sqhk.co/gilevetu/mvhghiE/pafaraletunaritetelupas.pdfIn PDF document text
    • https://cdn.sqhk.co/kerametunal/jiSjb9q/4552030220.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/Jhgjgge/duterte_fighting_crime_2_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/kovezozeseg/6UTE5D6/jugudapidegokefujopuliki.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/noximogiwunok.pdfIn PDF document text
    • https://cdn.sqhk.co/pevedapev/euSdagj/word_online_download_document.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/kuzosuko.pdfIn PDF document text
    • https://cdn.sqhk.co/wavagowew/QoIuVgj/88945531069.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/edhigif/fastest_bowling_in_cricket_history.pdfIn PDF document text
    • https://cdn.sqhk.co/tatogevi/jcgfqha/mens_sterling_silver_diamond_cut_rope_chain.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/tD9yjfz/befige.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guvekes.rf.gd/25297952340.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/how_to_change_battery_on_a_polaroid_camera.pdfIn PDF document text
    • http://mesesoriran.epizy.com/jonivukixudobesapanuxo.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_off0000e5e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E5 5532 bytes
SHA-256: cae3fa0d3322361e4bc2a9f33272ee8cffa99cfd3ad45bfda25bd06a67d24f78
font_01_sfnt_off0000f8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A8 11048 bytes
SHA-256: 3e73077ee46c3e3dd0bab2b976280edf1767aa51aacc86725afdcffa9548d4f8

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