Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c9bc335bed26700…

MALICIOUS

PDF

37.4 KB Created: 2020-08-26 10:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ba8bb9c90edf79690c95721048027dc SHA-1: e126b08b67fa02d49e1b55879adb94bb445356e1 SHA-256: 5c9bc335bed26700bcc5b75490b9f0c3bd8b6f6c982c33f97b4882d956fe441a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though partially corrupted, suggests a lure related to a 'Fiji passport application form', and the presence of numerous external PDF links indicates a link farm or phishing attempt. The ML classifier strongly supports the malicious verdict.

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=fiji+passport+application+form+nz In PDF document text
    • http://files.mountolivetvets.com/uploads/1/3/1/4/131437307/2593104.pdfIn PDF document text
    • http://files.national-ds.com/uploads/1/3/0/9/130969357/bufiwajujubagi-xumuginiv.pdfIn PDF document text
    • http://tunuragu.apextravelogue.com/uploads/1/3/2/8/132814956/0f32dbbbc.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/1/0435/2134/3647/files/cadaver_exquisito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/64226830991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8484/0089/files/85838704824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0736/7592/files/15664093864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/38752455323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4048/0155/files/japanese_english_bilingual_visual_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/ludakipupezodelejakamixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/dictionary_geotechnical_engineering.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3089/4999/files/dungeon_master_guide_pathfinder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/kedosabekidebipisax.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_off000054ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54AC 5244 bytes
SHA-256: 94b34ba4f1feff90229a00a5871bc4b40818cade82ff9591ca564a821d4417e7
font_01_sfnt_off00006671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6671 10144 bytes
SHA-256: 78b91a65f87264e0780b8ed231e520b98be89ffa67d836ff86792f76a712b373

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