Malicious PDF — malware analysis report

Static analysis result for SHA-256 88034c1f01bdb029…

MALICIOUS

PDF

63.2 KB Created: 2020-11-07 22:14:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 5681f0bd7a6ccbfaef0520c58d6a2aa3 SHA-1: 8544613c7cd842f34e08db86e8bbff239e2bf770 SHA-256: 88034c1f01bdb02975d1a6eb2127a2b59b1248e7ff5ee42188cf84717a2bf57f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://trafffi.ru/123?keyword=8+letter+words+with+repeated+letters PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389101/normal_5f971e1b276df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422637/normal_5f9ca288357f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://rabewinu.files.wordpress.com/2020/11/vukoro.pdfIn PDF document text
    • https://wejogude.files.wordpress.com/2020/11/niwasegini.pdfIn PDF document text
    • https://rivuwobari.files.wordpress.com/2020/11/97486393405.pdfIn PDF document text
    • https://wopuxipimupa.files.wordpress.com/2020/11/wotilimokojonuriku.pdfIn PDF document text
    • https://davonezoman.files.wordpress.com/2020/11/the_equalizer_2_ganzer_film_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/bank_exam_books.pdfIn PDF document text
    • https://tafexoru.files.wordpress.com/2020/11/3294531957.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/unblocked_games_66_slope_ball.pdfIn PDF document text
    • https://xewuripew660320655.files.wordpress.com/2020/11/64122234473.pdfIn PDF document text
    • https://mozadapa.files.wordpress.com/2020/11/wivolumonajawika.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000ba6c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBA6C 30548 bytes
SHA-256: 127e95a35eca2e40ec1524be5a977eeee63aa0d6b20bdc5685eadaf9a54e6245
font_00_sfnt_off00008221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8221 5240 bytes
SHA-256: aa9c15b7b338e221ef3c1fbec152f7c9b2c544dd2304433c3b5bba904761b749
font_01_sfnt_off000093fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93FA 11916 bytes
SHA-256: 856766d30a38d471a776c402f6f5b8716ea23f7509631b52f8e2168683030f1e

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