Malicious PDF — malware analysis report

Static analysis result for SHA-256 b70af985ae9744ec…

MALICIOUS

PDF

43.0 KB Created: 2020-10-27 02:27:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8954f71a9feeaeabd1521c336b48747b SHA-1: 846b104b717c9f81b9c87223abe27d523b20d08f SHA-256: b70af985ae9744ec2361967eaf8b3a07fb14bcf6c1344cd901aeca88a2955ee3
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a lure related to live sports streaming, directing users to a malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic and the embedded URL indicate that the primary goal is to redirect the user to a malicious site, likely for phishing or further malware delivery. The ML classifier strongly supports the malicious nature of this PDF.

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://ttraff.me/123?keyword=sky+sports+main+event+live+stream+olweb In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_5f8b056a6e27a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f8d41f44ec8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383912/normal_5f8c2252ab71f.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/fibaxizimudez.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/8885788.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/50274f95-4e90-4323-8ef8-15b79b3d4cfd/86673587818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/999af825-c513-4a96-8777-235c1b176fc9/23441974509.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72156b02-f02d-4724-8da8-c33fb2fe3e6e/44588466384.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30ddf24d-c7b4-4be0-af7c-013c39696320/lugopoferati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f863caf5-d124-461f-a80f-04e4c7c1df89/fudge_a_mania_movie_streaming.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/pijovukagamuw.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/oxford_english_mini_dictionary_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/55608489135.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/3d_max_2014_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/boule_de_suif_ekladata.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/asme_section_viii_division_2.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/arcsight_investigate.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_off0000678d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678D 5524 bytes
SHA-256: 6813c3f7e3e2430158b4ccfb82c796f08c274507e62e19afac1a18b2fab81b28
font_01_sfnt_off00007a5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5F 10708 bytes
SHA-256: f777b40a8ec000ea1c422ea2a504f94a40d8a00ce56bd6f04312f7dc35dc426e

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