Malicious PDF — malware analysis report

Static analysis result for SHA-256 0295d7748c5bba57…

MALICIOUS

PDF

41.8 KB Created: 2020-08-22 04:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cb2a35ee9f3362d92453aee5295da29 SHA-1: f160c296f8d1a0038da78769b6141700a7d1951b SHA-256: 0295d7748c5bba5779c9e5881c12311c41cbbd1794da83f3306209ab9bc5ddb6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a redirector URL, disguised as educational worksheets, which is a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the embedded link points to known malicious infrastructure. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=multiplication+and+division+worksheets+2+5+10 In PDF document text
    • http://files.northsidelibrary.com/uploads/1/3/0/9/130969818/bopipakuwuwo_xoxulexegi.pdfIn PDF document text
    • http://files.mirasolphysicalrehab.com/uploads/1/3/2/6/132681767/jodowaxopefibuw.pdfIn PDF document text
    • http://files.sara-rodrigues.com/uploads/1/3/1/8/131857916/6917007.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/8160016523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0455/files/tulesupomojemekeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/8701/2516/files/15489525840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/54393690979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0224/7838/files/86740714633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7361/7576/files/53283444466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/vinuwimewegefedigiles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4391/2854/files/internet_archive_wayback_machine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/12035811773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/gobapopuwe.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000567a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567A 5716 bytes
SHA-256: dae4a68213ab03a8fda0476b146a5f49c8d7a69d1777023f74669b5c8e6bc0a0
font_01_sfnt_off00006a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A02 9988 bytes
SHA-256: b506a09788dbc4eaab1de9e5dd5775cce2f04b1bd8dc51e7bc5fd8c4684e7b14
font_02_sfnt_off00008c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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