PDF malware analysis — malicious · 8662af9f602d3bef

MALICIOUS

PDF

41.6 KB Created: 2020-11-06 03:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: a87a8d130e8e0b610aec679599411a2d SHA-1: caf0c946cec4abcbc26db14b4acca81cc2c728ee SHA-256: 8662af9f602d3befde6fa26d7fb1a6024afe83351ba58ab98927ae5f6b8e8009

76 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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/aws?keyword=3+person+pool+game PDF link annotation
- https://cdn-cms.f-static.net/uploads/4388620/normal_5f98ce8bdf42a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414500/normal_5f9e91755a36d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/jezaxojipevu/centrifugal_pump_piping_design_layout.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/five_points_of_calvinism.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b1036cd7-84aa-42ab-899a-ecc9d673c438/pideximipasewe.pdfIn PDF document text
- https://s3.amazonaws.com/fulosobezur/ip_assignment_agreement.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b2816291-0b6d-4cbb-9d4c-911fcd5d1a11/16060769148.pdfIn PDF document text
- https://s3.amazonaws.com/subud/pdf_to_word_converter_nitro_free_download.pdfIn PDF document text
- https://s3.amazonaws.com/zetare/56630960075.pdfIn PDF document text
- https://s3.amazonaws.com/zetare/analysis_of_kartilya_ng_katipunan.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3cc019b6-95c6-4c5e-830e-de8d71c4434b/31405921386.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000654d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x654D	5208 bytes
SHA-256: `07fc925532395bc4acfefbdeead042cbf8b957b52d9157f624a05e221e08e4ad`
`font_01_sfnt_off000076e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76E7	10472 bytes
SHA-256: `4983e6584fdc91a12897911af4680a5304bd478da2af36548ad782777eb9d90e`

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