Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2f4ed1a8e8ae0e…

MALICIOUS

PDF

80.3 KB Created: 2021-03-19 00:04:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b06a73d2532b56f06b04afb1dd6b5be6 SHA-1: db8f784b272b3da8031c9ae4fe4142b6ff0c6d24 SHA-256: 9e2f4ed1a8e8ae0ee4fc7ba2529d53381323794b482584486a85032fb102c545
186 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of external links, many pointing to disposable domains, indicating a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external URLs suggest it is designed to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/wix?keyword=bluets+book+pdf PDF link annotation
    • http://jigikujed.scienceontheweb.net/taking_sides_clashing_views_in_abnormal_psychology.pdfIn PDF document text
    • http://pozezan.mygamesonline.org/alan_watts_this_is_it.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/how_to_construct_an_obtuse_scalene_triangle.pdfIn PDF document text
    • http://xofitazuregokud.mywebcommunity.org/47152959429.pdfIn PDF document text
    • http://divugifobera.iblogger.org/ms_sql_server_developer_edition_free.pdfIn PDF document text
    • http://vatidenow.medianewsonline.com/why_are_the_gnostic_gospels_not_in_the_bible.pdfIn PDF document text
    • http://zagodutaf.getenjoyment.net/15903355415.pdfIn PDF document text
    • http://kafalukuwemi.mygamesonline.org/warulikosota.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/aad874c5-77dc-4021-bc41-e53d8e71e347/63246712693.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5423dcb2-43c0-406c-97c9-f38363f76fb9/53158999665.pdfIn PDF document text
    • http://fepudukaxatam.epizy.com/tarapur_midc_boisar_company_list.pdfIn PDF document text
    • https://ddd59a73-be73-4575-bd7b-2e5900175f8b.filesusr.com/ugd/5dc0ef_98d9053ac0bd49e3a2f217af1a70ea01.pdf?index=trueIn PDF document text
    • http://rozunaxomibow.epizy.com/dixijivito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f1d695f-c4bd-4ecc-b2f9-870f49f9d344/7837966678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8aafc66-38f9-42bd-9860-caf1bd42524d/2015_jayco_redhawk_29xk_owners_manual.pdfIn PDF document text
    • http://rizokimom.epizy.com/52272793095.pdfIn PDF document text
    • https://2c9641c8-5874-4869-9b94-f1378e60aa6b.filesusr.com/ugd/efc1f6_06b4290f4c974ad08372d31aad1dc0d3.pdf?index=trueIn PDF document text
    • https://ce099f17-eb12-430b-a452-8d789b3ee5a8.filesusr.com/ugd/aef5b7_76a7c501de9447719d18ff60773cd294.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f723255c-0491-4dd8-84f5-8e697c242fa2/naruto_shippuden_ccg_card_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce251a06-26ca-4ef0-b486-1b0dc7d176ab/what_are_data_collection_instruments_in_research.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_off0000fcb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB2 4980 bytes
SHA-256: 1b5dccef56ececbad915f0dcfdf0292d306241f58c9d5d824e7c5746ba6a9b11
font_01_sfnt_off00010dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBF 11280 bytes
SHA-256: af6ee4c33de567936251ce71c211994d09ef0483fe0909c20bfd88ecbde7d705