Malicious PDF — malware analysis report

Static analysis result for SHA-256 98be3cd2d86f4cda…

MALICIOUS

PDF

42.0 KB Created: 2020-08-21 19:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e44b768d3e4e8e375d84575747b8a1e6 SHA-1: d610ef915e53b40f4401243cc863bc008284ad5f SHA-256: 98be3cd2d86f4cdaba88a172ba9b897d42a7a9123d9a5cda8e2284d6e54d6958
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on Shopify, suggesting a link farm designed to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. The document body contains the text "Funny animal sounds" and a URL, reinforcing the lure.

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=funny+animal+sounds In PDF document text
    • http://files.sharonjoys.com/uploads/1/3/1/4/131438557/xojono_lixorozawid.pdfIn PDF document text
    • http://files.allenwarnerphoto.com/uploads/1/3/1/6/131607163/de2d380.pdfIn PDF document text
    • http://files.azbroadwaykids.com/uploads/1/3/1/4/131437044/cd499fe1b77f4.pdfIn PDF document text
    • http://ropiduxu.koutoubiabeauty.com/uploads/1/3/1/3/131398222/pebefake.pdfIn PDF document text
    • http://files.letscreatewithbonnie.com/uploads/1/3/1/4/131407135/5102331.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/1/0432/5467/7662/files/wow_sports_live_apk_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6597/files/42724955609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/the_slaughtered_lamb_wow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1076/8546/files/75904952150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/sujiwubixev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/asymmetric_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7121/7572/files/16094024270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0522/1784/files/53228487216.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 7

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_off0000668c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668C 4932 bytes
SHA-256: 7a230a0f5f3e9fa83d45bb957cf162b7e92241ced492baaa02e2dda9dca79d19
font_01_sfnt_off0000774a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x774A 10580 bytes
SHA-256: fb19c9fcc176e60e53bd027ef15d574159ef427b9b436b3efcefcc3c40df31b4

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