Malicious PDF — malware analysis report

Static analysis result for SHA-256 84bb8df104cb246d…

MALICIOUS

PDF

62.1 KB Created: 2020-08-24 23:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e4edaae3aff649001b7d1154e5dbcae SHA-1: 07654cfd18a5b8a79857293daf636c88d56584bb SHA-256: 84bb8df104cb246d8b78fb00eafb0be14869a661b3ecd36990f22ced5a16e18d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links designed to create an SEO link farm, with a primary malicious redirector identified. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=quadratic+form+mathematica', which is flagged as a malicious redirector. This suggests the document's purpose is to lure users into clicking the link, likely leading to a phishing or malware download site.

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.com/pify?keyword=quadratic+form+mathematica In PDF document text
    • http://files.dominiquedunstan.com/uploads/1/3/0/9/130969386/subedib.pdfIn PDF document text
    • http://files.metrolimorides.com/uploads/1/3/0/8/130874598/pibolatoka.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/1/0428/4016/2470/files/23918070445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/medicamentos_antibioticos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0679/4651/files/sifal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2806/8005/files/bigo_live_app_old_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/86378929695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/6576996854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/89510170708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1791/7848/files/64445765555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/jinibogugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/weregavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/advanced_piezoelectric_materials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7614/files/53128055899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/migisuzabokutisinemuv.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 2

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_off000094f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94F3 5112 bytes
SHA-256: 9c1f8491655af0d8d10a59679c06abc2086ee8b8ec736b72c58d1d6b168e5305
font_01_sfnt_off0000a631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA631 14596 bytes
SHA-256: 894a0a60bfe05662aae2e2b9dec1b130fd038feb99b942756d5ca387078efedf
font_02_sfnt_off0000d446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD446 16528 bytes
SHA-256: 9489323ceac382052326a24d882bb1802c8ad62db8fec4a6137d33505583fb25

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