Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30d65b627213d8d…

MALICIOUS

PDF

68.3 KB Created: 2020-12-14 04:53:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 88b43417810ab6e95faccb1a6c16b11a SHA-1: d2c82c7425f4f5d9ad65b07d76454b5d18242678 SHA-256: a30d65b627213d8d4c6ddeafbf5ef5688271614fdbc5406af623f38b28be60ca
156 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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://trafficel.ru/123?utm_term=how+is+strip+cropping+done PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422136/normal_5fab1f670874b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_5fa42d3d7ac7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5fbc3ae3db886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365602/normal_5fbda093dd28c.pdfIn PDF document text
    • https://fogofude.weebly.com/uploads/1/3/4/3/134322730/4421545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403565/normal_5fb54574d1d60.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc130cd8787e879896ddc20/t/5fcbe88fb495bd20282efacc/1607198864039/infectonator_1_armor_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc82a16-5067-4d0c-8b3a-285b1f39e6c3/sogipakuvebimu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da4ffe52-692c-4115-b46b-da4b7e19b84f/tws-i7_user_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6c77d44e997374a286791/t/5fd6515a164d0f203c78d343/1607881050704/zigasonuliwopuned.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79cbd418d7934ac780470/t/5fd66cd4267c8d0ace48a249/1607888085498/om_bahadur_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e832653-d83a-4342-b722-0aa99ee3e5b2/girl_scout_cookie_order_form_2018_excel_template.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_off0000cff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF7 5052 bytes
SHA-256: f291118b330410df624042a4d974249253caf59d11b6ce9e7912b41edc1a4e19
font_01_sfnt_off0000e147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE147 10296 bytes
SHA-256: 3e3cb27c42b95a53cae4591b28388d9ec85a17e31e79b620f8f84eacf98e4fc4

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