Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3c3fcae67cb8262…

MALICIOUS

PDF

42.2 KB Created: 2020-08-09 03:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a37cb5a6b55f9ab84855e7f58129af8a SHA-1: a8f8cc7e6f5a50ab9d7003f1a63cb1a9ee902f0f SHA-256: a3c3fcae67cb8262c95d20b6bf19f99900d4f3a63ddf29b171aefcae32932bae
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Adjectives em ingles pdf' and the malicious URL, suggesting a lure to download further malicious content. The ML classifier strongly indicates maliciousness.

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.cc/pify?keyword=adjectives+em+ingles+pdf In PDF document text
    • http://files.ourhiddenhills.ca/uploads/1/3/0/8/130874104/wilazig.pdfIn PDF document text
    • http://files.littlebitsofhawaii.com/uploads/1/3/0/8/130874583/lilenuwexibalow-titobajige-bitolomomifa-mopegogitarilus.pdfIn PDF document text
    • http://xusud.troliosprint.net/uploads/1/3/1/6/131607163/6842335.pdfIn PDF document text
    • http://files.kellyproudfoot.com/uploads/1/3/1/4/131453861/vobakawov.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/1/0433/1431/5422/files/18253907635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bopeberovejaxurid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/sovewujusakujuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/razusifulemujuneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0645/0074/files/95438644875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2473/6678/files/python_functional_programming_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/96300685398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/dawigaximunej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/vajijonofilitizemago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/binoluso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/85447991163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9722/5368/files/97745580163.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 6

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_off00005d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9E 5296 bytes
SHA-256: 98f6d7281d41bda30b100065030fdd9b21d8475761484526283823ae3d9984cb
font_01_sfnt_off00006faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAA 14232 bytes
SHA-256: 76e49887646cfa721719cf15a426b311a07e8cd65cc72b85ce5beb0057168655

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