Malicious PDF — malware analysis report

Static analysis result for SHA-256 55dfa5cc803de70d…

MALICIOUS

PDF

92.6 KB Created: 2021-01-17 12:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8cb626346483cf5d96e54921b0b200ca SHA-1: c54ed8530a4f68b1bd8afbf3b5fd24ba6a96073e SHA-256: 55dfa5cc803de70d6ae35368f30a36c171f346f0667e6670686b9e418b41800b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=free+bossa+nova+music In PDF document text
    • https://site-1166647.mozfiles.com/files/1166647/jijamufibidufo.pdfIn PDF document text
    • http://gezudozu.iblogger.org/32076862037.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422385/normal_5ff6587690d7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445107/normal_5fa47f3d47a94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481286/normal_5ff37fcf501e8.pdfIn PDF document text
    • https://site-1176438.mozfiles.com/files/1176438/10834632854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385613/normal_5f8c87b5418ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410015/normal_5fdd20c12c38d.pdfIn PDF document text
    • https://site-1168079.mozfiles.com/files/1168079/carnage_battle_arena.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puwekaxaxowiza.epizy.com/javascript_auto_fill_form_and_submit.pdfIn PDF document text
    • http://rajunuximu.epizy.com/ganugaliradud.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/coral_print_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/ruselusasopiru.pdfIn PDF document text
    • http://nufufud.epizy.com/84024040518.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/warofopiguwemima.pdfIn PDF document text
    • http://rixexoto.rf.gd/85997416959.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/firelite_es-_200x_spec_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/6454893841.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/72510080903.pdfIn PDF document text
    • http://zutulig.epizy.com/antariksham_9000_kmph_telugu_movie.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10969 5068 bytes
SHA-256: 0ee62d26b263b7a1e00733b90111f7e6da078c306c0d02363a7ab19f29b8b329
font_01_sfnt_off00011a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A92 3000 bytes
SHA-256: efbdebb20762d70264c901df629ad0242309ede1df0414e9912ec3d550dcb287
font_02_sfnt_off00012740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12740 11592 bytes
SHA-256: 319d9fcf0886b5b83604767e305f9602054d674d8517e1ed106ffce42f1d382f
font_03_sfnt_off00014e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E48 16360 bytes
SHA-256: d22c511c4d3b831d0c9fc947097515241e5b44801d8bc496701dacc1a390acf7

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