Malicious PDF — malware analysis report

Static analysis result for SHA-256 073caa1e93c38a0a…

MALICIOUS

PDF

63.2 KB Created: 2020-11-24 00:31:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5ee807d6530d68e96fab7f8b7a0e552e SHA-1: c0de915e7c0fb55704eba837455232afd9d0fd7d SHA-256: 073caa1e93c38a0a5daee6c1b3b8e7e81571a76e32991d340b28f70f6048e9d8
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with at least one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a strong intent to direct users to potentially harmful sites. ClamAV detection further supports its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gettraff.ru/123?utm_term=mp3+player+speaker+amplifier In PDF document text
    • https://rimidewazasi.weebly.com/uploads/1/3/4/3/134317879/xiputuluzu_fexologititimiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405194/normal_5f9b850ddd766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374848/normal_5f97378137f92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376610/normal_5fa7d846397b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448346/normal_5f9e05691e140.pdfIn PDF document text
    • https://radumudoxelis.weebly.com/uploads/1/3/4/2/134235428/riripebaxowokex.pdfIn PDF document text
    • https://bawezinanowele.weebly.com/uploads/1/3/4/3/134305895/gumoru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402740/normal_5f9bd8f431758.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffd30568-0c34-40bf-bf61-265e1fa59880/paris_normandie_dieppe_faits_divers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/248dddfb-1ffc-449d-9a5b-dcaf1f440a28/wurotagofapuvuxefeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c14248c7-2cdd-4cdc-b539-8384d6b4b760/cheat_db_ppsspp_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/417417f3-fc97-4a30-a297-afb2ab9228fe/74625575254.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2450baed-9b86-432d-9320-796394ef57a7/9427952636.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_off0000ba8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA8B 5384 bytes
SHA-256: 058a2605676c57ca032fdc1560cee924f2ff897be434c2fa92c83e0e3aff8e69
font_01_sfnt_off0000ccdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCDB 9812 bytes
SHA-256: 431d6236c6361449cee7a8c8eb4d99ce90eaf3f4844ee2de84750651ab2f87df

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