Malicious PDF — malware analysis report

Static analysis result for SHA-256 141592c793581942…

MALICIOUS

PDF

54.5 KB Created: 2020-08-07 15:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cdf0e523ab636a8c5b7a3f01045a962 SHA-1: 3c2515fe990766efb5e98af0d7f261d320a2058d SHA-256: 141592c7935819421395d8372eac6074a5660fcc3c1b0202b2e26334c972cb45
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic identifying a redirector URL (https://ttraff.ru/pify?keyword=corpo+vivo+adonias+filho+pdf) that is likely used for phishing or malware distribution. The document body and embedded links suggest an attempt to manipulate search engine results and lure users to malicious content, masquerading as a document related to 'Corpo vivo adonias filho'. No scripts were extracted, but the presence of multiple malicious links is a strong indicator of malicious intent.

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=corpo+vivo+adonias+filho+pdf In PDF document text
    • http://files.premieredogs.com/uploads/1/3/0/7/130776343/8318eb.pdfIn PDF document text
    • http://files.rileystack.com/uploads/1/3/0/7/130775916/8291662.pdfIn PDF document text
    • http://files.leedstriathloncentre.co.uk/uploads/1/3/0/7/130776632/tabepadusesalonu.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/1/0432/8649/5397/files/siwomewapudemilexoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/camel_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6281/3084/files/gosoduvipagoxizomuvitulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2042/7157/files/97909280800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/9266871514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/xebitisalozazobuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8234/0770/files/22103835623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/tipevedikujegasawakugusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/77137869467.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_off000093c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93C2 5096 bytes
SHA-256: 594a9483cf1ab690c789ff607d49ee385428eb98877322a4a258e7d1c4eddcde
font_01_sfnt_off0000a50d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA50D 12636 bytes
SHA-256: c522633bd34c39f814320b5f79e742c0b1f4d3d728623281321d33c032f17bef

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