Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fb1e7b6c4d2c7b…

MALICIOUS

PDF

39.8 KB Created: 2020-08-17 11:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 204270e987c8dc5a9760d3c72bd750e6 SHA-1: a5f4a1d17c080942472782e5539f53cb457b01a2 SHA-256: 02fb1e7b6c4d2c7b5de77179beb470fefe22811167074d534e1b74da2ad2b696
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a primary link to a known malicious redirector infrastructure. This redirector is likely used to obscure the final destination and potentially deliver a malicious payload. The document body, though heavily obfuscated, contains text related to 'grade r life skills worksheets' and the malicious URL, suggesting a social engineering lure for a free download.

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=grade+r+life+skills+worksheets In PDF document text
    • http://katudoda.doublesmedia.com/uploads/1/3/2/6/132696483/faropixebona.pdfIn PDF document text
    • http://files.jiahjuice.com/uploads/1/3/0/9/130969754/kosedaluv.pdfIn PDF document text
    • http://files.k8willard.com/uploads/1/3/2/7/132740352/9247039.pdfIn PDF document text
    • http://files.instantresultswithkate.com/uploads/1/3/1/3/131398555/b44aeae.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/1/0431/5276/9192/files/noblesse_oblige_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0120/8232/files/75313423669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/26158214551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/sarezamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/samodunamibudaxutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4181/4693/files/lezerizegulidese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9560/3865/files/67876832482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/vesaretibisexogumavanoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/dolesepasixiri.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
🗂 Part of campaign: instantresultswithkate.com 3 samples

Related samples 6

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_off00005e32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E32 5180 bytes
SHA-256: 88854dd5626fc7541940c9d948fccd729a9641e4aa78a2aa21ca973768eca29d
font_01_sfnt_off00006fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE5 10176 bytes
SHA-256: d27dcc0f32b1153a4dd93560fbdce1e6abc66a75bba8a8aa21100ac196d0d372

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