Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c80260a41fdf9d6…

MALICIOUS

PDF

38.6 KB Created: 2020-08-10 05:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f211f44c259ce5eebb366da967ca077 SHA-1: 23615fcd44ee494332ec96be8c181a2d0ec764b8 SHA-256: 1c80260a41fdf9d6e9ad8b626f142913ada6313e2932ed79b96ac84bf088d296
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating it's a malicious redirector. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=nace+cathodic+protection+handbook+pdf'. The document body, though heavily obfuscated, contains references to technical documents and the malicious URL, suggesting a lure to disguise malicious intent. The presence of a link farm further supports the malicious nature of the document.

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=nace+cathodic+protection+handbook+pdf In PDF document text
    • http://files.oursaviorsdevilslake.org/uploads/1/3/1/1/131163533/5105704.pdfIn PDF document text
    • http://lonum.oicphotography.com/uploads/1/3/1/4/131453133/dozalitopaba.pdfIn PDF document text
    • http://files.rcdavis-tellinstories.com/uploads/1/3/1/3/131383624/ebc2656e5828c5.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/1/0438/6933/9808/files/coordinate_plane_blank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/89367360954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1188/1634/files/evento_cerebrovascular_isquemico_y_hemorragico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/62312809857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2872/5405/files/xeveviromuzeparawemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/pejatawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/cursive_writing_capital_and_small_letters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/69836686857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/31241337573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0938/4343/files/ingo_accountability_charter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6563/7019/files/45274715379.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_off000058f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58F9 5204 bytes
SHA-256: 65624defbea179e89963693ab2c2eea70fd2ec930ee53da7aad326cbd28447ae
font_01_sfnt_off00006aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAA 10148 bytes
SHA-256: dec1fb99d4eb4280b6638c5f3c69953eb5a800a0a5b4258e4db620535fbb4daa

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