Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a1a763496de0c15…

MALICIOUS

PDF

40.7 KB Created: 2020-08-24 16:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6633e4f30b9cf515fcc34e933f678332 SHA-1: d08a5d75e445ae8be22aa1ac691767caa654fa67 SHA-256: 8a1a763496de0c15f493a6c9df5de8283f7370c95aabfc27b34a30c647859fd3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One prominent link, 'https://ttraff.ru/pify?keyword=atmosfera+zumthor+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious websites, likely for phishing or malware distribution, by masquerading as search results.

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=atmosfera+zumthor+pdf In PDF document text
    • http://files.rjandluke.com/uploads/1/3/2/7/132712006/1052145.pdfIn PDF document text
    • http://rebol.grapes.global/uploads/1/3/1/6/131637814/4cbe6f.pdfIn PDF document text
    • http://files.vernonvtmusic.org/uploads/1/3/1/4/131438567/zaduxaran.pdfIn PDF document text
    • http://files.phuketdiveguide.com/uploads/1/3/0/9/130969097/359675.pdfIn PDF document text
    • http://files.nooracademychicago.org/uploads/1/3/2/3/132303374/fb947db7e80f.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/1/0435/3540/1109/files/bioenergetics_nicholls_ferguson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8609/4241/files/cosine_rule_missing_sides_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/92696670157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/81556361596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0675/4717/files/best_android_tv_box_review_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4912/3741/files/20542656680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9855/5043/files/majanipomivivijimakowuxet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7231/4789/files/donujonezukodibin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/kekoxigodigitiwijivov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/weruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2272/8866/files/82785094796.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 7

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_off000060b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B3 5288 bytes
SHA-256: 9219b539df42f5adba555e7bc2b10c9be947d92de966481424660dd9c52f2fb9
font_01_sfnt_off00007292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7292 9908 bytes
SHA-256: 14c4582a46d16945530c7aaa2d5187468ce0153f7844eb1163b292dff1b22b53

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