Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb8f69dd8a13625e…

MALICIOUS

PDF

77.3 KB Created: 2021-01-05 08:03:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 75192db75d55d545bfd07d05f1646124 SHA-1: 7503efad21eab266f0b0f67324b5d29460d4e21f SHA-256: bb8f69dd8a13625e0a4285e35974f2ad7dd8aea53c125157e1c7d8d3e1876d3a
214 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, including a critical finding for a malicious redirector link. The embedded URLs and the ML classifier strongly suggest a phishing or malicious content delivery attempt. While no scripts were explicitly extracted, the PDF structure and heuristics point towards an attempt to lure users to external malicious sites.

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://gettraff.ru/123?utm_term=orchestra+vs+symphony+vs+philharmonic In PDF document text
    • https://static.s123-cdn-static.com/uploads/4421780/normal_5ff3a47bab4f2.pdfIn PDF document text
    • https://cdn.sqhk.co/webaxepibi/djcgehc/the_ants_go_marching_original_cocomelon.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/7hiPYoL/word_attack_meaning.pdfIn PDF document text
    • https://simavaxefawok.weebly.com/uploads/1/3/4/6/134666246/povunafozag.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://s3.amazonaws.com/nilititonawafim/10790102549.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/3695558501.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/gijaletuluvugid.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/54503744260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8793b64-76c2-4c17-8530-f3d7ed4a74e6/netulobofikilopasemelul.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/wedding_slideshow_template_powerpoint_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/pavexozujuwazowoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/guida_istanbul_lonely_planet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e4dcd6a-fc98-4ad7-9c86-a4d44d6acbc0/akai_mpk_mini_mk2_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/backstab_apk_obb_apkpure.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_off0000e5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C8 5152 bytes
SHA-256: 29017f5ba145ec8a3aa14c0f7c439c5148331b10f86ddf29d731b2bdf01f1ba7
font_01_sfnt_off0000f72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72D 10152 bytes
SHA-256: 6ba048b6947c6d387790a50ca0c768d238aa94d4badaee2445f599da97379394
font_02_sfnt_off000119e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E9 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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