Malicious PDF — malware analysis report

Static analysis result for SHA-256 5873d4ffefb085ee…

MALICIOUS

PDF

56.2 KB Created: 2020-08-04 23:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1508baaa7fe913bfea9ea9767939676f SHA-1: db2bb46553d8e32d2864cb0fb379a759efa7a9dc SHA-256: 5873d4ffefb085eebad2fefa32ec929e632b36c130be006104d3b930c60650d5
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which are likely part of an SEO link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/wb?keyword=islamic%20calendar%202019%20pakistan%20pdf'. This suggests the document's primary purpose is to drive traffic to malicious or potentially malicious sites under the guise of providing calendar information.

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/wb?keyword=islamic%20calendar%202019%20pakistan%20pdf In PDF document text
    • http://files.cafl212.com/uploads/1/3/0/8/130814516/6369399.pdfIn PDF document text
    • http://files.roadstercarwash.com/uploads/1/3/0/7/130775232/numomijewe_gademuxazut_wigemo.pdfIn PDF document text
    • http://files.peopleandpipelines.com/uploads/1/3/1/4/131406506/gedosiwogaxa.pdfIn PDF document text
    • http://files.selkicasarpg.com/uploads/1/3/1/4/131409333/8033832.pdfIn PDF document text
    • http://files.naomicaselli.com/uploads/1/3/1/3/131383734/naxidogizel-peluduguw-jewijilululizu.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/1/0430/7514/1794/files/sawodapupuzineliweza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/4427499221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4416/6037/files/butenobaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4478/8634/files/14955398302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/ravapejaworijunesogozuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6671/0426/files/32390443456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2685/6610/files/mitimimijujiluviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1792/files/dofanilufozivinef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8487/files/68637926835.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8C 5784 bytes
SHA-256: e5aff5567f869e8422e82627b35dfbf42a0733b585e5f24bfa27973318404b22
font_01_sfnt_off00008021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8021 16052 bytes
SHA-256: 70ca1a1f327205d46f7015cc28be5c2b69315bf230f1f0d3fab19005ac0124e6
font_02_sfnt_off0000afdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFDC 21140 bytes
SHA-256: 7e281611f1935d806fa57b91b0658fa6277317be6ea22a8e428f2c622fcaa264

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