Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c56cc29c999249b…

MALICIOUS

PDF

76.6 KB Created: 2020-11-21 09:46:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: fb621051630569a0bbe74718a2d3c899 SHA-1: 1edef0249f321a5b6b817fa19f9f36a6f7a2cff7 SHA-256: 9c56cc29c999249b4837505746ecec09837e60e52486426f7c7839f49b5d1ac6
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect the user to malicious content.

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
  • 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.
  • 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://gettraff.ru/123?utm_term=terraria+character+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415070/normal_5fa1c844daa2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452148/normal_5fa06aaaab516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417808/normal_5fb32f4915008.pdfIn PDF document text
    • https://fidexodopisulo.weebly.com/uploads/1/3/4/8/134861067/puzeka_sufonodimi_fomexopurate_beroxu.pdfIn PDF document text
    • https://riwuwodanujebu.weebly.com/uploads/1/3/4/2/134234990/dufufex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370560/normal_5fa0acbd72dcc.pdfIn PDF document text
    • https://gidexexururetus.weebly.com/uploads/1/3/4/5/134505918/pizagupuf-fireto.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/wolina/90449660007.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/writing_academic_english_level_1.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/sudanedaxenitivaf.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/zukoxelulawafaf.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/98624296997.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/rockwell_compactlogix_selection_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/elton_john_net_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/49388628514.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/common_core_sheets_answer_key_6th.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_off0000cda5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA5 11256 bytes
SHA-256: dc1aea63e8a5bbc3ca37c09fbb3acc9e528675a6128048ac460936f030f9cff2
font_01_sfnt_off0000f233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF233 4888 bytes
SHA-256: 9c9b6f724340412e7bb056ff406388568e4a8b215dc18c8cd7f8f66b42fed989
font_02_sfnt_off000102d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D8 10180 bytes
SHA-256: 6be5e2e14d14f30fe31ff854b9395877bafc9bc66159bc386c750100d5bb62f6

Open this report in the interactive analyzer, or submit your own file for analysis.