Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a69f889b1b5380e…

MALICIOUS

PDF

41.3 KB Created: 2020-08-20 20:08:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 24e50fc9196b30e39975f3014ad1397c SHA-1: 3bb4f7fe0866b5fdaf64f687133a28ead6dc70e1 SHA-256: 2a69f889b1b5380e2f9852b5c2812221b691763ab827179d2845080db91bd082
162 Risk Score

Malware Insights

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

The PDF contains a prominent link that is identified as a malicious redirector. The document body, though heavily obfuscated, also contains the same URL, suggesting it is the primary lure. The presence of numerous external links, many pointing to Shopify domains with numeric slugs, indicates a link farm designed to obscure the malicious redirector. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=free++checkbook+register+template In PDF document text
    • http://files.kellgallaher.com/uploads/1/3/2/8/132814967/betimixaxolumudej.pdfIn PDF document text
    • http://ruxulo.derynhardieboys.com/uploads/1/3/1/8/131872155/bumuvibexixolub.pdfIn PDF document text
    • http://files.margotrobbins.co.uk/uploads/1/3/0/7/130776208/7372170.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/1/0438/3725/9938/files/4376180535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5710/0453/files/17880896670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/72338850281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9148/5091/files/rewipofozoladeviwubek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4738/6268/files/nujom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/31996621613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0754/1401/files/30398915883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/57329867751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1932/files/ballasted_vs_non_ballasted_track.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/96730943223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6225/8851/files/canarios_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5080/2081/files/color_wheel_worksheet_for_grade_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/39449804551.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6358 5504 bytes
SHA-256: 006f6a665463ec55da9138a872f9c107011039ab3b00a4dd893c2b9d0771544e
font_01_sfnt_off000075ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75ED 9992 bytes
SHA-256: 548160530a139108208784ad096a04ab63268415ad1f72d0ce8cc1b1a2a1ae70

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