Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fbdd5a137521bce…

MALICIOUS

PDF

90.3 KB Created: 2021-02-05 20:43:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 626f117d9d3709793955fdf412364e6a SHA-1: 7d0fabe5e00d33d71681f26dd75cc09f2cec5d16 SHA-256: 0fbdd5a137521bcef5f6ce3a2d6c478875e8433c24c91a60775cd6c236057777
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one specifically pointing to a suspicious domain ('jottigo.ru') and another to a link farm, suggesting a phishing or malware distribution scheme. The PDF structure itself is identified as a link farm on disposable hosting, further supporting this attack pattern.

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
  • 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://jottigo.ru/123?utm_term=scorpius+hyperion+malfoy+actor PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4501989/normal_60020efeab2f2.pdfIn PDF document text
    • http://dronextactical.xyz/english_capital_alphabet_writing_practice_bookgs51j.pdfIn PDF document text
    • http://erogan-oficial.site/bazzi_mine_mp3_downloadlhmey.pdfIn PDF document text
    • http://okstore.info/hack_game_dragon_x_dragonbgfx9.pdfIn PDF document text
    • https://xidekudogigut.weebly.com/uploads/1/3/4/6/134683706/5a19e414.pdfIn PDF document text
    • http://xudisoda.66ghz.com/pet_guardianship_form.pdfIn PDF document text
    • http://xtw2.club/radio_italia_fm_streamingpbr5q.pdfIn PDF document text
    • https://numeroluxovuz.weebly.com/uploads/1/3/4/7/134733954/xilojonawiwas_jobaxuwul_pezavinak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425921/normal_600b1c93a33fa.pdfIn PDF document text
    • https://mutabezikubi.weebly.com/uploads/1/3/4/7/134739743/sebaju_jakefuz.pdfIn PDF document text
    • http://lovelid.xyz/vosatidemukogasrswc.pdfIn PDF document text
    • https://kenojulovananav.weebly.com/uploads/1/3/4/0/134016885/nuzatijisu_mivogukolu_gewenamikusen_fuzixeloj.pdfIn PDF document text
    • https://vojumemij.weebly.com/uploads/1/3/4/4/134473557/guzubudejebi.pdfIn PDF document text
    • https://sidatenut.weebly.com/uploads/1/3/5/3/135349940/4333286.pdfIn PDF document text
    • https://fuwiposodunumof.weebly.com/uploads/1/3/1/4/131438128/bejobiviweburijog.pdfIn PDF document text
    • http://onlyforyou.space/format_php_file_in_visual_studio_code6rf5p.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gogositanisewu.rf.gd/amazfit_stratos_watch_face_apk.pdfIn PDF document text
    • http://wukefomirufiza.rf.gd/pezin.pdfIn PDF document text
    • http://wexaxota.epizy.com/animator_apps_for_android.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001249f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1249F 5460 bytes
SHA-256: 6e4605604a42199d2f606fde743eccc94928d5976897f5f1b347f427fd8ce482
font_01_sfnt_off00013711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13711 10764 bytes
SHA-256: 116768397a9ca3e3bcb1ed5bd1da513069a122c23bec8744efa7bdb0bedd4ff0

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