Malicious PDF — malware analysis report

Static analysis result for SHA-256 7973fb2a4a93e6cd…

MALICIOUS

PDF

40.1 KB Created: 2020-08-12 10:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50d8ced65895b89a7e71b1ed175a5b5e SHA-1: 43c7e42d1367b4035446488aa293b2579c359457 SHA-256: 7973fb2a4a93e6cde950f7f412d452527bc9bc17eaea47b5e4d02c37cd5a3b22
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector URL associated with malicious activity. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains the primary redirector URL, suggesting a lure for users to click through to a potentially harmful site. No scripts were extracted, but the presence of a malicious redirector and a link farm indicates an attempt to drive traffic to malicious infrastructure.

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=zbrojownia+starego+%25C5%259Bwiata+pdf+chomikuj In PDF document text
    • http://files.rsdtech.org/uploads/1/3/2/8/132815854/poverav.pdfIn PDF document text
    • http://duxowa.thebelleblog.com/uploads/1/3/1/4/131453267/nuvisijija.pdfIn PDF document text
    • http://files.equinoxsupplements.co.uk/uploads/1/3/1/3/131381607/9062126.pdfIn PDF document text
    • http://files.railwayterraceselfcatering.com/uploads/1/3/0/7/130739648/7708989.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/66089999249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/3ds_max_tutorials_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0537/7701/files/joxuwabanesisaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0937/4368/files/cooking_calc_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4103/8229/files/fasagubodizelufonife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1509/2894/files/wii_drum_sets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6564/7002/files/4046576127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0994/9348/files/hinduism_religion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3771/2806/files/bible_study_plan_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/gewixujuniveku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0657/4240/files/89061612225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/74498992213.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBC 6068 bytes
SHA-256: d4fb9c27ebf247005f09c632bccef4831accdaa7a6ab1bca32035267b3ead66c
font_01_sfnt_off000070d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D8 10404 bytes
SHA-256: d9a57d5a4268316540d3803d82fe14a545642b17501f57281ab7ac46877a6c70

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