Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfd3984dbaac9cb…

MALICIOUS

PDF

60.9 KB Created: 2020-10-28 15:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 22af3e764926b43cf8a5ecf2151ff9ec SHA-1: 95df6d0b4f575251a7b5519e89231e201f3bc21a SHA-256: abfd3984dbaac9cbf0ed8475e855722ba8f33c0c35fab0062f02fddc62e1c8df
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, with one heuristic identifying it as a PDF link farm. One of these links points to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the nature of the embedded links suggests an attempt to redirect users to malicious sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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/strik?keyword=pathfinder+how+many+feats+per+level In PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/8909761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401976/normal_5f96c9e468025.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410956/normal_5f953a920e511.pdfIn PDF document text
    • https://rokolumer.weebly.com/uploads/1/3/0/9/130969153/f2b5007e1a635c6.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/1692507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368475/normal_5f8d2012b7c6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368782/normal_5f8e41307d184.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f877d5e7ce0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f8750c652499.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382771/normal_5f920894d3d6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f871717ab464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_5f895c8cc6ff8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371509/normal_5f8db102da4bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371248/normal_5f8ffc205db8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f892615da403.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8567/6188/files/40321814935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5644/2777/files/dependability_in_qualitative_research.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/78731876979.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/xivotewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1211/8952/files/marina_salas_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1089/0138/files/71481776662.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off00009b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B02 6744 bytes
SHA-256: 0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
font_01_sfnt_off0000abe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABE9 5536 bytes
SHA-256: 89cdcb90f226a3b29f89207de5d9458c124f7cd0b098276df3334d06d515dde5
font_02_sfnt_off0000beaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEAF 11292 bytes
SHA-256: 24424e0ce102e78cccac767f375c427cb078832b68f16fbc880354c530fa22ad

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