Malicious PDF — malware analysis report

Static analysis result for SHA-256 f82cda35b0ccf834…

MALICIOUS

PDF

45.6 KB Created: 2020-11-09 05:53:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f607710d5b8b03db9061caf66bc0d86e SHA-1: 172931bb5873b168c112c72ea95a3a23c22a3c3d SHA-256: f82cda35b0ccf834132ad82768b3dbf9ae4d124d422805a99ed46c11534e6fc2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a large number of external links, many of which are benign, but one primary link points to a suspicious domain. The document's content appears to be a lure, presenting a search result for 'Jordan peele movies made' to encourage clicks. The presence of a PDF link farm heuristic indicates a deliberate attempt to create a large number of outbound links, likely for SEO manipulation or to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffe.ru/123?keyword=jordan+peele+movies+made PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/kurio_phone_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d303ba84-43ac-4c18-a9e0-466a79d256b5/wockoder_record_player_skipping.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/673dbd94-721a-4830-8c59-ea4381d2a624/judgement_trophy_guide.pdfIn PDF document text
    • https://zatejoru847961968.files.wordpress.com/2020/11/72489844693.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/horse_comforter_sets_king.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b78621ca-da7c-4bd0-9237-365f646a63a0/2007_toyota_camry_hybrid_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31becc8b-9cba-4abc-b2e3-30bcd8185495/kosiduzag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/584c8dc8-e134-4994-8fa4-04edeea6c1ba/raxulolulipejopuwegejet.pdfIn PDF document text
    • https://tafexoru.files.wordpress.com/2020/11/3294531957.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72896f23-7682-452c-bbe2-1d8fbc9b80c4/impractical_jokers_season_6_episode_1.pdfIn PDF document text
    • https://larevugarowu.files.wordpress.com/2020/11/difosobawovetexojitibex.pdfIn PDF document text
    • https://romekelisefo.files.wordpress.com/2020/11/nitunawikudaremutujozudok.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/yoshiko_kawashima.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/71278673295.pdfIn PDF document text
    • https://rajegup.files.wordpress.com/2020/11/wilks_mathematical_statistics_1962.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_off000070d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D2 5156 bytes
SHA-256: 20c09989680f25a36c1fd8098262d6461fc7bfb6f6d4fb5c3b67c8d81cfd6a1a
font_01_sfnt_off00008248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8248 12120 bytes
SHA-256: 7e1acc55ceefdd159ebfdbe5e23b907365bab3f64726ba97f5de3df3a90de7bf

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