Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee10773edaa797c…

MALICIOUS

PDF

76.9 KB Created: 2021-02-14 20:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: d2fa754bb378003013dd7689fe88dec3 SHA-1: 981b7a80ace9b96bc8bc37b2d3861f7131a84fb3 SHA-256: bee10773edaa797c98f992dbf0ed32b71b620a0530c9dcdf81e9c05bc0682eac
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://yafferge.ru/wb?keyword=tax%20residency%20certificate%20india%20form%2010fb'. The document body, though heavily obfuscated, contains text related to 'tax residency certificate india form 10fb', suggesting a phishing lure. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://yafferge.ru/wb?keyword=tax%20residency%20certificate%20india%20form%2010fb In PDF document text
    • https://static.s123-cdn-static.com/uploads/4446496/normal_5ffe2a3beeb16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475219/normal_5fc59171bd539.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/5hhrIja/family_zoo_the_story_cheats.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489052/normal_5fdb1312c4474.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494429/normal_6023d9dadafc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403936/normal_601b21ada0560.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369153/normal_5ffc49f1d06de.pdfIn PDF document text
    • https://cdn.sqhk.co/xujifomevesa/cWUehcd/cod_mobile_lucky_draw_cost_singapore.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444864/normal_601a381faed28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405194/normal_5fe098da65d0c.pdfIn PDF document text
    • https://cdn.sqhk.co/zedawuzijis/I9f7gi6/68126898511.pdfIn PDF document text
    • https://cdn.sqhk.co/tidaxetosi/rvhjheP/western_mangalsutra_designs.pdfIn PDF document text
    • https://cdn.sqhk.co/gigijuke/jRMHshj/pinumuwurowusonu.pdfIn PDF document text
    • https://cdn.sqhk.co/supekolev/hieijj9/moon_whales_ted_hughes.pdfIn PDF document text
    • https://cdn.sqhk.co/sajatanugeg/giiftla/sifazazovelalat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/corruption_of_champions_level_up_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/kadawob.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/gikurokepasukosudarub.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/kugakilewomikip.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_off0000ef5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5F 5588 bytes
SHA-256: 07a7fca9ce9fb48af28568ec13924918ba1a49c1930883fd2eca780a9f8e97cc
font_01_sfnt_off00010257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10257 10456 bytes
SHA-256: 9493fdea0aca0c1871f4c4603aac9baa2762732709e73f8b0066647bf21cbd92

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