Malicious PDF — malware analysis report

Static analysis result for SHA-256 2090f5b7b5664b18…

MALICIOUS

PDF

34.9 KB Created: 2020-08-13 22:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a39129beb8559c42df86847bbdb3c90 SHA-1: 6e211780b2937e011684055682dc562b04293c7e SHA-256: 2090f5b7b5664b18dba24415b8fd8b82484e8fdd558e622bb3279cbb5c9fb26a
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'income tax rules' and a URL that matches the redirector. The presence of numerous embedded links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination. The primary malicious IOC is the redirector URL.

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/wb?keyword=income%20tax%20rules%202002%20amended%20upto%202018%20pdf In PDF document text
    • http://files.happytailspets.co.uk/uploads/1/3/0/8/130814631/jasepuji.pdfIn PDF document text
    • http://nemawew.hocobicyclerentals.com/uploads/1/3/0/7/130776330/9622b06.pdfIn PDF document text
    • http://files.gaychambercincinnati.com/uploads/1/3/1/3/131384293/zerubiriranikegu.pdfIn PDF document text
    • http://files.closdecandele.com/uploads/1/3/1/8/131856624/29b12.pdfIn PDF document text
    • http://nuzoma.emboldenfestival.com/uploads/1/3/2/3/132303382/dalakawi.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/1/0435/4444/5092/files/jubixipogoperufizabenufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/tropism_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2699/5621/files/sijaduxagoxib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/minesujusenaxabikegak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6575/1192/files/kajogizozajeruso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9492/4694/files/32763293602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/tulukonugonebikatug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2232/5672/files/introduction_to_wavelet_transform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7225/7181/files/zebivogojeluvozemopibob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/7499505544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4916/4698/files/wafaligaton.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 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_off000049ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49AC 5828 bytes
SHA-256: 7860241a814e30c6f9960d02d8d6152c07579e0241d2b9de49b0220e5643adec
font_01_sfnt_off00005d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D64 9844 bytes
SHA-256: e42bba6c9dcdf7bb10fad7bf898900f7d6bb04a795fd39faa214d455652053a5

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