Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f1d361cf585d6c3…

MALICIOUS

PDF

39.0 KB Created: 2020-08-08 18:37:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57c6f051f6fdb3e89f3f647bc8135a09 SHA-1: 4c967325debec4359dc325a7d9a8a89d3938e5b4 SHA-256: 5f1d361cf585d6c312f67239d99fadd7e9994eaf5b8d694e874eec938520b1b4
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service known for malicious activity. The heuristic firings indicate a "PDF_SEO_LINK_FARM" and "PDF_MALICIOUS_REDIRECTOR_LINK", suggesting the document is designed to funnel users through a chain of links, likely leading to a phishing or malware download site. The ML classifier also strongly flagged this PDF as malicious.

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=atys+3s+pdf In PDF document text
    • http://files.maxrhodesarts.com/uploads/1/3/2/6/132683357/201db77b38e2.pdfIn PDF document text
    • http://files.colinjlmccartney.com/uploads/1/3/1/1/131164159/popeponuraju-perufukiraf-lipakinubosop.pdfIn PDF document text
    • http://faguv.indigartmildura.com/uploads/1/3/1/4/131407089/443f0f6bb4.pdfIn PDF document text
    • http://files.feliciaaroney.com/uploads/1/3/1/4/131437636/7b4620c.pdfIn PDF document text
    • http://files.socorroboutique.com/uploads/1/3/2/6/132681824/61612bff1947b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6412/files/94486811311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/javascript_group_by_two_properties.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2862/8135/files/lufekutini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7564/9180/files/celestial_navigation_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0614/7229/files/lowinev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7574/7491/files/59889333309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/bankers_algorithm_in_deadlock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/jibabejolerazanigamiwoseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6666/8694/files/17330070538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8506/9478/files/non_core_edition_windows_10_activation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/catalogo_hinode_colombia_2020.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51A3 4360 bytes
SHA-256: eac805058aa6a0422bab71f8f39b99ee57d2961634f553fa2926ae98724be2a8
font_01_sfnt_off00006072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6072 9584 bytes
SHA-256: 5248d8756cec01a40617d54afb5c5fa03cc74d6dac0d56eaa29f86d62ffa7581
font_02_sfnt_off00008139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8139 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34