Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ae2530c5b410c8…

MALICIOUS

PDF

78.5 KB Created: 2021-03-04 02:42:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b7207b991519b99874fd99337bc0ab28 SHA-1: 8d72df6afc840e780568c1f1325dab735d5f72ee SHA-256: 89ae2530c5b410c83f764b68169b7e66d6282367db0fc8030ee22733c41b7172
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'Trainspotting book english translation' and the authoring application, which is likely a lure to disguise the malicious links.

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/aws?utm_term=trainspotting+book+english+translation PDF link annotation
    • http://zusiwibewire.mypressonline.com/troy_bilt_trimmer_attachments_home_depot.pdfIn PDF document text
    • http://flebolog24.com/nabigikososogoxepowails1b.pdfIn PDF document text
    • http://magic-spring.com/all_cheerleaders_die_part_2_releasekl3fv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453540/normal_5ff084ddb4fe5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369794/normal_6029cb1368b9e.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/warren_wiersbe_be_books.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/latin_root_word_for_mitochondria.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367640/normal_5fdebc5f9897c.pdfIn PDF document text
    • https://cdn.sqhk.co/vujuzira/jNNjetk/lowes_near_me_now_open_today_near_me.pdfIn PDF document text
    • http://b4shop.icu/vomufimiguc7gb0.pdfIn PDF document text
    • http://dazolovegom.mygamesonline.org/lash_extension_course_kit.pdfIn PDF document text
    • http://microbestdigitalmeter.xyz/pusago2fo8m.pdfIn PDF document text
    • http://lawyer-consult.ru/22126945401yw5j4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikubub.onlinewebshop.net/samsung_grand_prime_pro_price_in_kenya.pdfIn PDF document text
    • http://dokudaruriwiv.atwebpages.com/nubagibelubolemelazubod.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_off0000f66a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66A 5232 bytes
SHA-256: a891813ea00207976efffc8e812dfba25c3419ac854ce6c71680713ea9c57e5f
font_01_sfnt_off0001082c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1082C 10992 bytes
SHA-256: b7b55f01331a86c3af0e616f8895eb634013dcf7115e8bd4949f635c65d42b41

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