Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a5b1d6b925b44f5…

MALICIOUS

PDF

50.3 KB Created: 2020-08-21 03:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea0986abc1484f964395703ffa2dda84 SHA-1: 977123d318801a0b0330c34b8e359a49c2adf507 SHA-256: 5a5b1d6b925b44f5e651d12021eb472136a12d298a3357987829849be0cf0366
194 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=bobina+de+tesla+pdf`, which is flagged as malicious. The document body, though heavily obfuscated, contains references to this URL and also benign-looking Shopify URLs, suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness, and the presence of embedded links points towards a social engineering attack.

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=bobina+de+tesla+pdf In PDF document text
    • http://files.beauporthotel.com/uploads/1/3/1/3/131379477/namituzajiso.pdfIn PDF document text
    • http://pemege.mandmcattlecompany.com/uploads/1/3/1/4/131453284/ad97eb.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/1/0435/4798/4026/files/manual_de_frases_basicas_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/savil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3335/4659/files/evangelismo_personal_myer_pearlman_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/ninupuzibosisododum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9689/9745/files/55358300523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/telefavosalezovumose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4115/2421/files/2682000070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1251/4204/files/lurefepusirewokejax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4224/2709/files/14997445041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1003/0748/files/dragon_nest_sea_2018_leveling_guide.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 1

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_off000087dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DD 5128 bytes
SHA-256: 9df2796b3522e6934af5b7a78213ec41d3fc6f9788d12607bfcde111ca63ea0f
font_01_sfnt_off00009957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9957 10256 bytes
SHA-256: f2b8be6e0da36b5a6ef0a034f4d7572debcccde7866f04fbe777cd012eb25464

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