Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c686cb02e8da599…

MALICIOUS

PDF

85.0 KB Created: 2021-04-07 22:08:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9f3bd3f20846d43da092bf0591f7707a SHA-1: 28fa87db4bfcccbf382228e9b60d7163204df235 SHA-256: 5c686cb02e8da5994c66b1c9df36e68330c4a58a2f7d9531c155dcafec7297f4
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains or link farms, suggesting a phishing or malware distribution campaign. The presence of a link farm and disposable hosting indicates a low-effort, high-volume distribution method. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/123?utm_term=kabir+singh+bekhayali+song++ringtone PDF link annotation
    • https://cdn.sqhk.co/jurugaguvedu/ifygghi/51213346046.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/hampton_bay_ceiling_fan_remote_control_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/19949631810.pdfIn PDF document text
    • https://dobisuji.weebly.com/uploads/1/3/1/4/131454523/ac11370.pdfIn PDF document text
    • https://fujireroxilurig.weebly.com/uploads/1/3/4/6/134649353/956996.pdfIn PDF document text
    • https://difodofixipa.weebly.com/uploads/1/3/0/8/130814112/3117263.pdfIn PDF document text
    • https://cdn.sqhk.co/kewukapugino/bSQEYSc/60048479505.pdfIn PDF document text
    • https://konilusikiwi.weebly.com/uploads/1/3/3/9/133986353/0f882d.pdfIn PDF document text
    • https://cdn.sqhk.co/puberufibo/icjjJJu/5584330660.pdfIn PDF document text
    • https://cdn.sqhk.co/dawolesirip/iCZSGvH/vsco_cam_filters_free.pdfIn PDF document text
    • https://menudobuwowewil.weebly.com/uploads/1/3/4/7/134765252/lojifelivegodev.pdfIn PDF document text
    • http://sozapemogoz.mygamesonline.org/49682252314.pdfIn PDF document text
    • http://pijakonojimuw.iblogger.org/android_auto_app_missing.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/roriposilukesipaxibusom.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/87580691141.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dolojivek.onlinewebshop.net/site_reliability_engineering_o_reilly.pdfIn PDF document text
    • http://rokivurudaga.epizy.com/66563226710.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF05 2988 bytes
SHA-256: 42e3783caedf448e14fcbc75b18e161657efc393aa677f58ca9a5bff480967cb
font_01_sfnt_off0000e9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B6 5220 bytes
SHA-256: 69beda9266a431b7b4bc33bdd95057429310430ce50f3f7fbc7743997958fc48
font_02_sfnt_off0000fb71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB71 3388 bytes
SHA-256: 6be695d081bfc1b63d80b320725038db4c9717490e6af3f5f1a6ce404c701054
font_03_sfnt_off00010922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10922 10864 bytes
SHA-256: 3c3ef742372e10201438dece7114570d990b7cdc0e27883b6a8f8bb1ba90a40e
font_04_sfnt_off00012eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB0 16740 bytes
SHA-256: 74d93773f660cf468826769b59883d98b4b474227a153ed8e537329a62ef1ce7