Malicious PDF — malware analysis report

Static analysis result for SHA-256 9693a113677745ee…

MALICIOUS

PDF

68.2 KB Created: 2020-11-10 08:06:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9acd252e231ef35b70cd947eded2071c SHA-1: 12a7ca0610d4ef8dcc0628182437d8bebc186a7c SHA-256: 9693a113677745ee308863668c61ab57689183ef8d5bd1f10eabe83592393e44
222 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The presence of a "download button" heuristic further suggests a lure to download malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a phishing or malware distribution attempt, likely using a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?keyword=a+wife+and+mother+game+download+apk In PDF document text
    • https://fidojosamesevuf.weebly.com/uploads/1/3/4/5/134594598/napilojajabibomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390051/normal_5f9d2c829e7c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381756/normal_5f91076ec940d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5f9b44b8736e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371005/normal_5f91d96a91eec.pdfIn PDF document text
    • https://purusoze.weebly.com/uploads/1/3/4/4/134495244/7811503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380682/normal_5f8e04541ddb8.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/sinadi/peroxizufupenodaxenu.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/builder_pro_for_minecraft_pe_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/54980751835.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/lincoln_a_photobiography_theme.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/who_owns_the_past_overlapping_heritage_concept.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/19776913523.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/505343213.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/is_ez_battery_reconditioning_a_scam.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/bowflex_revolution_exercises.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB703 3400 bytes
SHA-256: e875ab1c1fe393d83dfc6f03d67570ed6722221f138cb4722e3e6606d41aa012
font_01_sfnt_off0000c309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC309 5420 bytes
SHA-256: 9ee6a31aea8faca364abeefd123d08ceb1cfa8e9a8bd4fc8596f5980bc120050
font_02_sfnt_off0000d561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD561 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_03_sfnt_off0000ddef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEF 10740 bytes
SHA-256: 8facff92b1a11cbbc662599b09cb410814bb99dc65a199eadab121b9b53ae261

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