Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c153c63a3338a3…

MALICIOUS

PDF

42.7 KB Created: 2020-08-20 02:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 725acbb002f7eaa3927e24c6d7fdbfbf SHA-1: 3095e59ead0c8dc19ab11b649c35580fe4819742 SHA-256: 25c153c63a3338a39faa25d4ee412cd4e5da673bc8b067e542b69b3b9ed39900
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.ru/pify?keyword=diffusion+and+osmosis+practice+answer+key In PDF document text
    • http://files.jonathankotyk.com/uploads/1/3/0/7/130738562/noxewakomu.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://cdn.shopify.com/s/files/1/0434/2287/5797/files/asme_pcc_1_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6875/2807/files/couple_goals_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97503793953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/xivizivowipemovon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6897/6291/files/york_air_cooled_chiller_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2756/0610/files/vowesefuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2340/9057/files/wokonepomikivojun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7038/2485/files/31672528966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/76051943027.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5856 5408 bytes
SHA-256: bba3fcf7f227ede5ed8fb29ebc84daaea21bb7d0e46b41b521f644343817ae62
font_01_sfnt_off00006abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABC 10200 bytes
SHA-256: 0c09a3fac52cba3aeccf9f769ed348ee803a12ec5a41699b90dd0c1702f0fd41
font_02_sfnt_off00008db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB0 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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