Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea03ab1ff80a104…

MALICIOUS

PDF

63.1 KB Created: 2020-11-21 00:24:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 58cef2d099e04203c12c88395632728d SHA-1: dff837d4cb03d7a6f5740c16f2423167c4c67741 SHA-256: 0ea03ab1ff80a10416554417d4af4b51b3e9e4c1874a60d3d5cd8c6627d2925c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/aws?utm_term=agilmente+estanislao+bachrach+pdf+gratis In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5f8ac078646c8.pdfIn PDF document text
    • https://sizasaligibi.weebly.com/uploads/1/3/4/5/134506534/perokenefuzes_zekutip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_5fa92faabc041.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://s3.amazonaws.com/fasanag/85370984574.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/camilla_parker_bowles_former_husband.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/dell_optiplex_gx280_price.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/legal_order_lts_fraud.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/furegixezinuluvumogupoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/child_development_and_pedagogy_books.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/26921165782.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b075e927-95da-4c33-8dbf-9cfbbae47d0b/94671720103.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA99A 5488 bytes
SHA-256: 9691a698d6b0425b63d8c3067a98395359f6fed244e593abebea5492897f4c0c
font_01_sfnt_off0000bc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC05 10672 bytes
SHA-256: 8396d3ee1ad4e668387719384ddeeda05ae9b19129994eee236f5af2834297ca
font_02_sfnt_off0000e014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE014 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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