Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6aae4969a960e4f…

MALICIOUS

PDF

49.4 KB Created: 2020-11-06 23:00:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 164910b4943a83b6bc5da1e1c7008254 SHA-1: 3c3a0cec14d5e49d854fea1ece68afd05f50a92f SHA-256: b6aae4969a960e4f78e6899fab7b375e0abb65ea6a9a9135af7db4345c5b5400
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file is identified as malicious due to its inclusion of a link to known malicious redirector infrastructure. It also contains a large number of links to external PDF files, suggesting a link farm for SEO manipulation. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffking.ru/123?keyword=southern+advantages+in+the+civil+war In PDF document text
    • https://manabaxijex.weebly.com/uploads/1/3/4/6/134626004/fegejex.pdfIn PDF document text
    • https://zavigajigufuf.weebly.com/uploads/1/3/1/6/131637719/tepuji_xafebiwojumelel_kusilunug_wejupop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sopudag.files.wordpress.com/2020/11/wojoborigode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eda82941-de55-4fba-b877-3a50208f0d3e/mopotebugapububulaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/746c97ae-7c2b-40a4-9073-40422cd15177/27953025331.pdfIn PDF document text
    • https://xeruluzolu.files.wordpress.com/2020/11/70004843017.pdfIn PDF document text
    • https://tibepitetuj.files.wordpress.com/2020/11/tufobinadaxo.pdfIn PDF document text
    • https://botebofeji.files.wordpress.com/2020/11/15963812645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dd2caae-79d7-4462-a077-7e5a8d155418/33881459260.pdfIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/fizimobaruweboratiweti.pdfIn PDF document text
    • https://xexagaze.files.wordpress.com/2020/11/47684800467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69d52d26-805a-4b18-bdf7-624f03cdddca/junolexifoxipod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69e41565-d2f6-435d-97f1-e3cf1074118c/roluxumedule.pdfIn PDF document text
    • https://ditigogonib.files.wordpress.com/2020/11/80936372183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f28b5851-ae9f-4d12-b96f-cb71c41a4cc1/tumblr_shemale_porn.pdfIn PDF document text
    • https://likuzow.files.wordpress.com/2020/11/40264502684.pdfIn PDF document text
    • https://goresab.files.wordpress.com/2020/11/kaxafopuzikewovenikem.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_off0000803f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803F 5456 bytes
SHA-256: ed45dc88b7cac864fccb38ce892b3b0e117a40ce83dd3a0b9abf613eb3b2555f
font_01_sfnt_off000092d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D7 11120 bytes
SHA-256: 2fafa9a8b8eb2159315704e3ab88a1fe8404c7f73072000d2f3d1873df8473c7

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