Malicious PDF — malware analysis report

Static analysis result for SHA-256 3347196e0321244b…

MALICIOUS

PDF

36.3 KB Created: 2020-08-11 18:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ea9cd3fb9fc2a0474e19a49b5fb1236 SHA-1: 7eb5ecf8b9d7bfd3db73a817770572e1b49497e7 SHA-256: 3347196e0321244bcf7a49b9761c3c6c4a3793d51114e0d483b9540312c4eece
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious redirector infrastructure. The document body also contains a URL that appears to be a lure for a book download, which is likely intended to trick users into clicking the malicious link. The PDF_SEO_LINK_FARM heuristic further suggests a large number of external links, many of which are hosted on Shopify, likely to obscure the malicious redirector.

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=cutting+edge+new+edition+advanced+student+book+pdf In PDF document text
    • http://files.jessisartandpipersphotography.com/uploads/1/3/1/1/131163774/felumuwimadures.pdfIn PDF document text
    • http://files.lakemurraymontessori.com/uploads/1/3/0/8/130874125/55f852cbef.pdfIn PDF document text
    • http://files.ursulinemetz.com/uploads/1/3/1/3/131383959/8331573.pdfIn PDF document text
    • http://files.kornstad.com/uploads/1/3/2/3/132303061/sebila.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/1/0435/5181/7879/files/ffxiv_spice_rack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/zugasodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/92422199599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/97968233887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/39292667078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/6533988770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5480/0797/files/55917907647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6332/7385/files/definition_of_data_collection_procedures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/maths_lit_textbook_grade_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5350/5946/files/vejefiwoduxamov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7694/4021/files/67734660340.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 4

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_off00004cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD8 5456 bytes
SHA-256: b8ff0094fa1a9cdfed725672963fb16943daf8d815d413455541d20da92ed5c9
font_01_sfnt_off00005f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F91 11240 bytes
SHA-256: 126934df76ac85c8bf1928dde1b54cb9ca7134d67abccd29c3893eb09c46a17b

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