Malicious PDF — malware analysis report

Static analysis result for SHA-256 295f9a67b00f25a1…

MALICIOUS

PDF

73.4 KB Created: 2021-05-12 22:34:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 6f1374d366f68f1ea4132c60f75de6e8 SHA-1: c01e265807b9ac7e9695055f04672c9bc315110a SHA-256: 295f9a67b00f25a11adede398e225264c0595f3c2862caf8cb61541608e2358c
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic firing for an external URI and an SEO redirector link, indicating a phishing or malware distribution attempt. The embedded URL points to a suspicious domain, likely used to host malicious content or redirect to a phishing page. The ML classifier and ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/strik?utm_term=casio+g-shock+style+series+herrenuhr+ga-100cm-5aer PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4529087/normal_5fd5f4674d87c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377663/normal_60215cab1a8ef.pdfIn PDF document text
    • http://myfavoritesun.xyz/how_to_study_korean_website_reviewtu2ij.pdfIn PDF document text
    • http://batmbatm.ru/wexuragoxuwonqh4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447267/normal_5fe616457d0e8.pdfIn PDF document text
    • http://xofawewojego.22web.org/neumonia_neonatal_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377113/normal_606600c881b3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451932/normal_5ff0b88a58046.pdfIn PDF document text
    • http://vawenujorukipep.22web.org/aptis_writing_test_sample.pdfIn PDF document text
    • http://streichpack.online/effective_workplace_communication_marsha_ludden0fdm4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zapofekeba.rf.gd/66826760902.pdfIn PDF document text
    • http://bazusokilole.rf.gd/bonus_amendment_act_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/sajan_chale_sasural_bhojpuri_picture.pdfIn PDF document text
    • http://jozolefifove.epizy.com/redhat_6_image.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/ti-84_plus_ce_app_for_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/mp3_to_bandcamp.pdfIn PDF document text
    • http://lasakarafivof.epizy.com/vocabulary_test_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/cross-_border_payments_and_reporting_plus_cbpr.pdfIn PDF document text
    • http://dabevejef.rf.gd/kureb.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/company_profile_powerpoint_template_nulled.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/vowaba.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/sears_craftsman_garage_door_opener_keypad_not_working.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_off0000e1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C8 5632 bytes
SHA-256: 4fb5bb17f3dcd91e86cf017b3c77e43a54252d325ec9236f3ea2deb8eb6232c0
font_01_sfnt_off0000f4dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DD 10432 bytes
SHA-256: e9d2593306b16a66ca2e176a86b612fcaf4051cd9adcc65ff2f57df77bc33f2b

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