Malicious PDF — malware analysis report

Static analysis result for SHA-256 95bf4000a9754815…

MALICIOUS

PDF

46.9 KB Created: 2020-10-31 13:24:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 05d6e19e15096692ac29c3ed90457264 SHA-1: 12b6ccd2c66d6c22df22192ebd1dfcde34fbff8c SHA-256: 95bf4000a975481571c3d2f093ac304aa978ff0aef2faa09ff0a03c2a780058a
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a critical heuristic firing for a malicious redirector link and a PDF link farm. The ML classifier also flagged the document as malicious. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content, potentially as part of a phishing campaign.

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://ggtraff.ru/strik?keyword=the+aggregate+expenditures+model In PDF document text
    • https://tazejoga.weebly.com/uploads/1/3/1/3/131383942/5812818.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402964/normal_5f953148bd0b4.pdfIn PDF document text
    • https://disanelazutiwi.weebly.com/uploads/1/3/4/3/134361230/gemazawisef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417543/normal_5f9c8ff67b3f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5725/7889/files/vorinoduwefexawovepijezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1530/2043/files/vowoxopuxusafupipufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4450/3191/files/summer_of_my_german_soldier_dvd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/1783/5948/files/75493033378.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eae171cb-6306-4c72-8e64-4af9b524ad89/54065195536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e025fd99-a3b0-4cd1-89b2-4954ceb9f1f2/d16y8_engine_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/117111cc-88e8-42b3-8965-9258de8145dc/66275023739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/5585/4790/files/27355500359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9187/6759/files/gozebof.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_off00006a58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A58 5272 bytes
SHA-256: 71e83254d0e76ce7a649ccc4ff65766a3df1407269ba55a0c1df93cbe0cf8a26
font_01_sfnt_off00007c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1B 10684 bytes
SHA-256: e097c9e5fcb13ef07028290d353003269141e14023d09e6695c877fa08e97014
font_02_sfnt_off0000a0b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0B9 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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