Malicious PDF — malware analysis report

Static analysis result for SHA-256 16c44161aab93cc7…

MALICIOUS

PDF

49.9 KB Created: 2020-08-18 21:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1472f1455b43b600bdf2fd696a655f15 SHA-1: 67e84ee00b1fd80d2a1824b48819f4c39973c502 SHA-256: 16c44161aab93cc7aca6a2df98de03f3c1eee706e25c316596de9ef1ce0c26b0
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to appear as a financial report template, but they redirect to malicious infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=monthly+financial+report+template+powerpoint+presentation, which is flagged as malicious. The document body itself is heavily obfuscated but contains embedded URLs pointing to this redirector and other benign-looking Shopify links, likely part of an SEO link farm to disguise malicious activity. 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.ru/pify?keyword=monthly+financial+report+template+powerpoint+presentation In PDF document text
    • http://lupakag.smorgasblogs.com/uploads/1/3/0/8/130873995/rafevaxabupoluk_tozojidowisedi_gariko_gagupexopo.pdfIn PDF document text
    • http://files.geneseedance.org/uploads/1/3/1/1/131163902/fejerumavi-xizogasegiv-sizujadevatora-verafowafewa.pdfIn PDF document text
    • http://files.rhemayoga.com/uploads/1/3/2/7/132740275/35cd77d39eb9.pdfIn PDF document text
    • http://files.chicagoschoolofgrappling.com/uploads/1/3/1/4/131409170/312064.pdfIn PDF document text
    • http://files.sitesofpassage.org/uploads/1/3/1/0/131071240/455213.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/1/0431/3179/7668/files/59076888754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/95906392959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8091/6893/files/80925271591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9912/7959/files/adulthood_is_a_myth_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/difevuzelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2584/1821/files/16200502258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8259/3957/files/78670133234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5516/9182/files/35539693197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/50396463122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/muatan_gaya_dan_medan_listrik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3810/0891/files/brotherhood_of_war_full_movie.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_off00007f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4F 5452 bytes
SHA-256: a6c88ff200f5bdbbb04bb3cf4f255a71b608e8ce2d107ed04a3d26aadd079903
font_01_sfnt_off000091c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C7 12812 bytes
SHA-256: c3cede400fee3d55b29acd799b5551dec46f1dba4b44328edc1f1f3edc75521c

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