Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9d7199f7c797287…

MALICIOUS

PDF

91.1 KB Created: 2021-03-18 21:08:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: b39ed98a16fa0185eb0baa9074c94852 SHA-1: 680cb86d548fa476ae4fda3ac1a52db4b1b6a1d0 SHA-256: b9d7199f7c7972879603c8fa92645e639961ec21000c029a169d799c4c2ec71a
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The PDF contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing or redirection attempt. The presence of external URIs and the overall structure strongly indicate this document is designed to lead users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=toro+20334+air+filter+cover PDF link annotation
    • https://digavonuvuveg.weebly.com/uploads/1/3/4/8/134851043/86c9e6e.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/jd13K4J/61178534658.pdfIn PDF document text
    • http://mixevome.22web.org/zagaludirakediwoz.pdfIn PDF document text
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/41402531185lvsj6.pdfIn PDF document text
    • https://letuwolisabir.weebly.com/uploads/1/3/4/6/134602086/mivegoxiteve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494891/normal_604b8a794092d.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/ZjhPicq/best_wario_combos_smash_ultimate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467926/normal_5ff277e5399c0.pdfIn PDF document text
    • http://kdghy.online/imperative_form_l_gofx7q.pdfIn PDF document text
    • https://cdn.sqhk.co/purovufizu/ic4Yhab/wunaniloduwetavidego.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/ejixlbf/dukemefa.pdfIn PDF document text
    • http://fakoxime.iblogger.org/archinterior_29.pdfIn PDF document text
    • http://medasosu.22web.org/92507383220.pdfIn PDF document text
    • https://linazoforup.weebly.com/uploads/1/3/0/8/130814758/fopoxuzoviwimo_xojovafoxaz.pdfIn PDF document text
    • http://complerbnp.com/miguel_street_themesx4a4t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383460/normal_6001f46203a19.pdfIn PDF document text
    • https://vazemewezasal.weebly.com/uploads/1/3/0/7/130775722/lejoruxuj-sufidafuk-sosujeniresifo.pdfIn PDF document text
    • https://cdn.sqhk.co/fugutexifi/eheLasW/emoji_crafts_pinterest.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444117/normal_6022c5dd038e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454559/normal_5fe4e7243c616.pdfIn PDF document text
    • http://webimedokawuxun.iblogger.org/java_se_windows_xp_32_bit.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
    • http://dasanurarad.epizy.com/control_systems_engineering_notes.pdfIn PDF document text
    • http://xafuvarajuxeg.epizy.com/aseptic_techniques_in_microbiology_lab.pdfIn PDF document text
    • http://zasewosena.rf.gd/4711810675.pdfIn PDF document text
    • http://latuwukatagowa.epizy.com/toyota_corolla_2016_le_oil_type.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_off00011a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A45 4912 bytes
SHA-256: 8022f565255f2377c97d84148664af1b617f05e8253a2c94cccfdfb9fca86db5
font_01_sfnt_off00012b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B06 10920 bytes
SHA-256: f7f2967ed080c17b0286ced19c477aff169305f4678856c73c0702e701d9291a
font_02_sfnt_off00015042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15042 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c