Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4aec002da9f539…

MALICIOUS

PDF

74.5 KB Created: 2021-04-02 23:10:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 707194e6c0217299dded69fb1ad19cb4 SHA-1: d6a095bb30cb9c1d905eca6c1643799e569b0f45 SHA-256: 3e4aec002da9f539dcca553dc7584587c59ecd57f25492e9b5d4925724869939
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://ponafet.ru/award?keyword=slope+of+a+line+from+a+graph+pdf
    • https://cdn.sqhk.co/duzoxibuf/9iaaFTn/coda_meetings_portland_maine.pdf
    • https://cdn.sqhk.co/libobivole/jf4d4uK/wacom_application_defined.pdf
    • https://cdn.sqhk.co/fipufose/ifAiahe/lufosujelazoda.pdf
    • http://totalcreditcheck.info/what_is_my_remington_model_11_worthcenck.pdf
    • https://cdn.sqhk.co/wefekoferu/jcieIgc/vabimesexokusakiw.pdf
    • http://s7hmus.org/how_do_you_collect_a_judgement_from_small_claims_courtjgh2m.pdf
    • http://trelon.fun/on_my_own_les_miserables_lea_salongaco7oo.pdf
    • http://abistrans.ru/plantronics_backbeat_fit_wireless_headphones_manualehw82.pdf
    • http://bcpzonasegur4viabcp.com/6186267764q5ofl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rovikibixu/62938189112.pdf
    • https://s3.amazonaws.com/wudibirewuduto/23679541099.pdf
    • https://s3.amazonaws.com/tokatefozude/jewopafexobolijokab.pdf
    • https://s3.amazonaws.com/napisakaluja/34663597752.pdf
    • https://uploads.strikinglycdn.com/files/57f68948-db38-4cee-9278-16862c7bbba6/18750156911.pdf
    • https://s3.amazonaws.com/zuxime/bogokonukasi.pdf
    • https://s3.amazonaws.com/jolituzoji/lujumikajatadit.pdf
    • https://uploads.strikinglycdn.com/files/ef51b5a5-cf1f-4435-b9b6-d4e1fd998330/21419784654.pdf
    • https://s3.amazonaws.com/zubata/cambridge_10_test_3_reading_answers.pdf
    • https://s3.amazonaws.com/nutanigonu/teden.pdf
    • https://uploads.strikinglycdn.com/files/529b92ec-feec-4186-9719-3bb2d7c7844f/97661989289.pdf
    • https://uploads.strikinglycdn.com/files/030302fc-ebd9-48f0-a709-30d0de91b27b/full_dictionary_online.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e797.bin
2c01b5b26c5809d4cd35fe0995ec6d175519274ad0860aad4773d92f7e113f9e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE797 5380 bytes
font_01_sfnt_off0000f9b7.bin
3faa910abd3791fa2d379e31e45ec07beb0143f671236e150f9169322b4d09f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B7 10268 bytes