Malicious PDF — malware analysis report

Static analysis result for SHA-256 98dcd8dda712d04d…

MALICIOUS

PDF

67.4 KB Created: 2020-08-28 12:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc59ea3261b3806493f98f97a55f300d SHA-1: bbfede75949b6db9e47aff62260fa5ee944c9134 SHA-256: 98dcd8dda712d04d5df9e595f6770191ae3b7dc099000c07468e535566a76ba3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=limitations+of+cardinal+utility+theory+pdf', which is likely intended to lead the user to a malicious site. The presence of a link farm heuristic further suggests an attempt to manipulate search engine results or distribute malicious links.

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=limitations+of+cardinal+utility+theory+pdf In PDF document text
    • http://files.foundersparkhighlands.org/uploads/1/3/0/8/130814874/gogoleripifewus-goratadalaf.pdfIn PDF document text
    • http://files.beaverpastoralcharge.com/uploads/1/3/0/7/130776728/7534487.pdfIn PDF document text
    • http://xaxenak.fifthelementdefense.com/uploads/1/3/2/7/132712615/66633.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/1/0436/9979/8166/files/jaani_dushman_movie_3gp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7141/4948/files/loriket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7213/5074/files/histology_and_cell_biology_an_introduction_to_pathology_kierszenbaum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/animal_reproduction_worksheets_for_grade_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/ridulugasukoxupegupen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4174/2997/files/wodafoluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/86656062301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6224/8102/files/45631881917.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 4

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_off0000b4ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4AE 5436 bytes
SHA-256: edc875bc8122da9895e7a1d6e4dd52f070c495742e3bf1e4bff663bc1700acde
font_01_sfnt_off0000c6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6FF 10496 bytes
SHA-256: 11eb2cef03553e6d6dac483d8760b17517e38faa6fb0fec3e42eb8ddd8b182e4
font_02_sfnt_off0000eb1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1B 16172 bytes
SHA-256: 9798eae3882c6dd0fb2b74aded3910b182eab56c68edbfe7a299e28646c1144b

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