Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e7a2bc3e5b29ff5…

MALICIOUS

PDF

111.7 KB Created: 2021-05-30 10:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5850fe80241292853a59e5eefc7b41c4 SHA-1: 08bfedfb6a95d5c2861bc933f29a8e1845987c81 SHA-256: 9e7a2bc3e5b29ff5a8f24ca9afeb9ec227e8fcb28f729f6eece8fc1ccedfee6f
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://crophysi.ru/strik?utm_term=how+to+rank+up+fast+in+arena+far+cry+4 PDF link annotation
    • https://rafafokisot.weebly.com/uploads/1/3/4/7/134738004/mafokenixi_nubusefomunofo_kamojo.pdfIn PDF document text
    • https://polidixixav.weebly.com/uploads/1/3/4/4/134467230/gimujururenu_mapidobaxetapoj.pdfIn PDF document text
    • https://gasibikame.weebly.com/uploads/1/3/2/8/132814219/456e8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461786/normal_60245ab736d4e.pdfIn PDF document text
    • https://jowiroluka.weebly.com/uploads/1/3/4/3/134336896/mevavoze.pdfIn PDF document text
    • https://pozojemiveze.weebly.com/uploads/1/3/4/6/134690114/8641296.pdfIn PDF document text
    • https://ganoworot.weebly.com/uploads/1/3/4/2/134236177/863812.pdfIn PDF document text
    • https://limakeluror.weebly.com/uploads/1/3/4/6/134657352/nebiduwebonito.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412573/normal_605fbafa55c7d.pdfIn PDF document text
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/1848115.pdfIn PDF document text
    • https://fiwobezamarevev.weebly.com/uploads/1/3/2/7/132740324/jilobigawo.pdfIn PDF document text
    • https://pozefixinez.weebly.com/uploads/1/3/1/4/131454190/2ff8c643.pdfIn PDF document text
    • https://zukazitorixum.weebly.com/uploads/1/3/4/7/134772558/8088063.pdfIn PDF document text
    • https://fuwozubasuzej.weebly.com/uploads/1/3/4/4/134473550/kumamezixoperizibok.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/6ec2b70b-0a40-4e7b-9e28-02caf7c6eb9e/the_tenth_insight_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/230afccf-e8d4-4104-bfe5-62135850a51f/pumefekol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bed4bdc1-8db5-4d03-b0c2-ddb9f138dc97/ashton_woods_condominiums_austin_tx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d9ffb44-0844-491a-96bb-16b56a6daf40/lozezasodezovozete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f744595-04f3-47a5-8754-2064fd4c9288/know_understand_do_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7a9dbd4-e05c-4d79-a196-c63d3a754bd1/57674340912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/103aa6a2-bb85-416e-8846-696e7a00a8e5/original_power_90_workout_schedule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45f3f22b-71a0-481a-a067-2bcb6e2f1510/sex_coloring_book_pages_harry_potter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f1083d8-373a-43df-a42f-3ae20b17d7d4/how_the_grinch_stole_christmas_1966_stream_online_free.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_off000177e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177E6 5284 bytes
SHA-256: 00f73cb451a0f95af57f608ee5f8d21dccf6616679d42c02cd6b4538d07e2f1f
font_01_sfnt_off00018a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A0F 11448 bytes
SHA-256: 35728f25f62d655d2ae332da0aadfb6522987bfd3d9b25c97d950c54c796d41e

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