Malicious PDF — malware analysis report

Static analysis result for SHA-256 47fd707d9090c81f…

MALICIOUS

PDF

71.0 KB Created: 2020-11-17 17:57:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1ce53a2bc267644ef96b946f97c92620 SHA-1: 7410e0f9f30d4fd722f2358f7d69af46108f598c SHA-256: 47fd707d9090c81f4c8d169d79c13865d69b8b1c5abd9a54c62ca9e99844d4c0
244 Risk Score

Malware Insights

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

This PDF document contains a large number of links to external websites, many of which are hosted on disposable domains or known malicious redirectors. The document body, though heavily obfuscated, suggests a lure related to business correspondence. The presence of numerous links, including one pointing to a known malicious redirector, indicates a strong intent to direct users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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.
  • 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://ggtraff.ru/123?utm_term=sample+letter+of+intent+to+do+business+with+a+company In PDF document text
    • https://mixosikopas.weebly.com/uploads/1/3/4/3/134383158/dajesij.pdfIn PDF document text
    • https://motuzepiruwilo.weebly.com/uploads/1/3/4/3/134348631/ruraxis_tirumemoguw_rukopiba_daviwes.pdfIn PDF document text
    • https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/33e6309c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420244/normal_5faa2abbd9ea4.pdfIn PDF document text
    • https://zikenanevo.weebly.com/uploads/1/3/4/5/134589255/3693993.pdfIn PDF document text
    • https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/a5ed03b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450141/normal_5fa35929295e8.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/tusumizegado.pdfIn PDF document text
    • https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/voxexinelosiremejas.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/d0e99b7638402.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393647/normal_5f92dfdd47bb9.pdfIn PDF document text
    • https://nubegajal.weebly.com/uploads/1/3/4/6/134668927/fakana.pdfIn PDF document text
    • https://nubitewubol.weebly.com/uploads/1/3/4/3/134385952/mafagowebi.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/diwitapezu/android_phone_manager_application.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/vixupixitumilikewoxiratir.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_off0000d80d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD80D 5832 bytes
SHA-256: 04579571d45538202f7fdb55549b16633d3f2c14e50f3bbf35e9db6e6e327587
font_01_sfnt_off0000ebcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCD 10248 bytes
SHA-256: 7a06b4a8e066271b445b43c59a04f5bed5ae8c7a7dae367426bd6fd9a35447be

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