Malicious PDF — malware analysis report

Static analysis result for SHA-256 18328098b6d45f9f…

MALICIOUS

PDF

42.6 KB Created: 2020-08-17 05:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54e5bd89d866f8a96955dcab562c5ed6 SHA-1: d98dcb9a54906bcbbaa15f4ee30150ef01ee9a1f SHA-256: 18328098b6d45f9fccd55b16c156408d2a55ac43455c08043ae1adca2bf20779
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate downloads but redirect to malicious infrastructure, specifically the URL 'https://ttraff.cc/pify?keyword=bitdefender+antivirus+plus+full'. This indicates a phishing or scam attempt leveraging a link farm to distribute malware or lead users to fraudulent content. The ML classifier strongly supports the malicious nature of this PDF.

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=bitdefender+antivirus+plus+full In PDF document text
    • http://fivawe.canyonrunner.com/uploads/1/3/2/7/132740362/5656547.pdfIn PDF document text
    • http://files.stjohnsdunellen.org/uploads/1/3/0/7/130775309/wodoriduj.pdfIn PDF document text
    • http://files.mylittlewoodshop.net/uploads/1/3/0/8/130813325/6649781.pdfIn PDF document text
    • http://pivevuzak.dirtygardening.com/uploads/1/3/1/6/131636755/2900745.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/1/0430/0252/7895/files/alemlube_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6563/8050/files/network_topology_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/fupefuludurikevupabuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0441/9478/files/noc_letter_format_for_housing_society.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4231/4152/files/punctuation_rules_and_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8570/8968/files/80786424070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7354/4093/files/98345768987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/73252899978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/damuzeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/34645599182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2785/5522/files/74522578223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/wujuxuvuxamabokawarobu.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_off000068c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C2 5144 bytes
SHA-256: 33594b8daa1cd51cec9935e79962c2f1c089b30d078dbdf74205e35635254035
font_01_sfnt_off00007a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A51 10620 bytes
SHA-256: 46a6e0f6d595fc0357ef87e361f42bf8e979c4e7fbcd8d6fdcbb2f8094cf4fc2

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