Malicious PDF — malware analysis report

Static analysis result for SHA-256 0829cda1287d4916…

MALICIOUS

PDF

73.5 KB Created: 2020-12-26 13:37:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 6fabdbad6f8b916a80055209473a5904 SHA-1: 4323caadd2d70064c63a80923be186014647ac46 SHA-256: 0829cda1287d4916342b52e8c2b9128b765506bf42050eae956105e4344b5255
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically identified as pointing to known malicious redirector infrastructure. The ML classifier and ClamAV also flagged this file as malicious. The embedded links suggest an attempt to direct users to malicious sites, likely for phishing or to serve further malware. No scripts were extracted, but the presence of numerous links implies an intent to exploit user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ggtraff.ru/aws?utm_term=mariam+khan+reporting+live+hotstar+serial In PDF document text
    • https://cdn.sqhk.co/jesisuvov/xgi7icX/13924511205.pdfIn PDF document text
    • https://cdn.sqhk.co/libarazituw/cgerhaA/11053511094.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/44ed2334b6121.pdfIn PDF document text
    • https://keregejuvuja.weebly.com/uploads/1/3/4/3/134345288/fanogu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/54bb26eb-2014-4efe-b408-ee8b3d270057/ps3_wireless_internet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2de71b1-0341-4b06-8e6d-a8ce8e168f9a/astm_a153.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/music_sheet_holder_folding.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/compound_subject_and_predicate_worksheet_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/you_raise_me_up_instrumental_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a92ffec-e99a-4cb5-9f83-6a2fe2ba70ae/jefopivexilapupelaresi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92d8fae6-adb0-402e-9b4f-6c459df6ab73/reorganize_photos_by_date.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD572 5152 bytes
SHA-256: 26faf580353e59f543ecca7d03f08fac3236eae11b7058cd0316e04899d05333
font_01_sfnt_off0000e6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D4 10588 bytes
SHA-256: efccebd307d3ab780342a7959e2cd279cf0f7e75eb69100b2c09d567f8b91d5f
font_02_sfnt_off00010af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF7 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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