Malicious PDF — malware analysis report

Static analysis result for SHA-256 2089aa2ef9a7d982…

MALICIOUS

PDF

40.7 KB Created: 2020-08-04 06:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c5243a024cc69ce78a2b0f51648040fe SHA-1: cf0c5c480935fac592f4735c0d6949bd4f4dc928 SHA-256: 2089aa2ef9a7d982c207b91f898e69c2cb93e81c641280a4ee534fc71ad45f12
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'rice pdf' and the tool 'wkhtmltopdf', suggesting a lure document. The ML classifier strongly indicated maliciousness. The primary attack pattern involves redirecting users to malicious sites, likely for phishing or malware delivery.

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=by+products+of+rice+pdf In PDF document text
    • http://sufofuw.oldfieldtubeamps.com/uploads/1/3/1/4/131408056/2368700.pdfIn PDF document text
    • http://files.fpclewisburg.org/uploads/1/3/0/8/130874250/9209f9a1f2.pdfIn PDF document text
    • http://files.eimanelgibreen.com/uploads/1/3/1/4/131407194/1c1f7c95c8.pdfIn PDF document text
    • http://givupaj.katherineking2001.com/uploads/1/3/1/4/131408738/negoz.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/1/0431/7983/5547/files/nitawumawetava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/37578903629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3706/3328/files/7088999224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1538/8840/files/21965264299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/74436114954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8100/6244/files/best_open_source_video_editor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9315/6259/files/lodupuvusuzonanodusovum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/45684060426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/83223884698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9102/5306/files/tuweb.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 3

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_off00006252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6252 5056 bytes
SHA-256: e8f87f161f5f272826c850a4bd7039b1d303cb7b4fac21c60bc6e56862786ef0
font_01_sfnt_off000073a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A9 10156 bytes
SHA-256: ce4a6c8acaba980c34122345997a589cfa8a41007a41328234cd43a756416976

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