Malicious PDF — malware analysis report

Static analysis result for SHA-256 0508dff1c95841ca…

MALICIOUS

PDF

46.0 KB Created: 2020-08-09 06:05:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67cbbc14f5f050c411cfc7ec75709db4 SHA-1: 38d6b7968917bccaec968dd4485a165ace46e19b SHA-256: 0508dff1c95841ca8b478f0b16f9826b9595ff7462db2974ea9bb203abfa0429
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link farm designed to appear as a free download of architectural plans, but it redirects to a malicious URL. This tactic is commonly used for phishing or distributing further malware. The ML classifier strongly indicated maliciousness, and the presence of a redirector link confirms a malicious intent to lead the user to a harmful destination.

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=planos+arquitectonicos+completos+pdf In PDF document text
    • http://files.aratiinternational.com/uploads/1/3/0/8/130874671/5738791.pdfIn PDF document text
    • http://files.nhstudentwellness.org/uploads/1/3/1/8/131871633/90fcec093.pdfIn PDF document text
    • http://files.hudsonvalleybookdesign.com/uploads/1/3/0/7/130740563/9112005.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/1/0432/3295/2477/files/87744750388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1757/6354/files/54846184504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovabokuvuxinapuwukiberem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/vajifojav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9558/9013/files/nuvuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7834/4097/files/gosamibusorogabivos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9298/2427/files/31654889637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4608/8349/files/try_catch_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gozoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2270/1976/files/11835688530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2011/4344/files/a_guerra_dos_tronos_a_muralha_de_gelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0333/0208/files/jajogikavupezojodajar.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_off00007175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7175 5428 bytes
SHA-256: ec0cd63e902d2d13a66bc6b59724b18367d4824a09feace27535904bf063db4a
font_01_sfnt_off000083cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CF 11568 bytes
SHA-256: e0ab116d17aabdcc71dc14b255d2d572cd5c002b7899897c2063a57f4059c203

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