Malicious PDF — malware analysis report

Static analysis result for SHA-256 3353edfc57c5c302…

MALICIOUS

PDF

37.8 KB Created: 2020-08-23 03:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d981ab0b61177ccd403218b7306090ff SHA-1: 744fd1139744f772aad7e535e7ba6849d371ea12 SHA-256: 3353edfc57c5c3029fe28f7fc6e9edd2464263b156266a1657fc36a91b16df5a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded links that are part of a link farm, with one specific link identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Vizio sound bar manual' and the malicious redirector URL. This suggests a social engineering attack aiming to trick users into visiting malicious sites by posing as legitimate documentation.

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=vizio+sound+bar+38+5.+1+manual In PDF document text
    • http://teranu.coonrapidscrimeprevention.org/uploads/1/3/0/7/130738918/milewimo-zezivodugujej-lizinijimav-dapakut.pdfIn PDF document text
    • http://veroxa.ernst-arch.com/uploads/1/3/0/7/130776132/b881083659.pdfIn PDF document text
    • http://files.grandoaksatx.com/uploads/1/3/0/7/130740049/5525136.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/1/0430/7812/3680/files/33618430675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/behavioral_genetics_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/53972619945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1256/2849/files/18090855183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/information_security_news_site.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/81829665887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6223/1967/files/4347444701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0678/6725/files/pufanebefakixexeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9735/6443/files/mastering_a_and_p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5506/2948/files/ketuf.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_off0000546c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x546C 5692 bytes
SHA-256: c398af9076f4f389f5b59e0e38f7dddaef23921fc82dccd61fc26b6772e1b4e4
font_01_sfnt_off000067bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BB 10272 bytes
SHA-256: 098fe9afcb3dab790f4fa5366634133f2ea61155e9c2b12fb6440bdc4efdc820

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