Malicious PDF — malware analysis report

Static analysis result for SHA-256 2608ce212a527752…

MALICIOUS

PDF

58.0 KB Created: 2020-08-10 18:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d28b9bcb9b49f4dcf5add0c54367c22 SHA-1: 2fccf05ca563d87fb9b0f00f8ab57b2728aef3bc SHA-256: 2608ce212a527752c5f62f4138ff934a37f114c57d821c6e408be94b667c2cdc
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Geological mapping techniques pdf' and the malicious URL, suggesting a lure to download a malicious file. 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.
  • 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=geological+mapping+techniques+pdf In PDF document text
    • http://files.emilykirchermorris.com/uploads/1/3/1/4/131407530/defemu-wokasofake.pdfIn PDF document text
    • http://files.nyingma-summer-seminar.org/uploads/1/3/2/6/132683330/97276ac.pdfIn PDF document text
    • http://files.ponderosaguild.org/uploads/1/3/1/6/131636728/3267965.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/1/0431/1459/4464/files/80867671034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/kigobezisigolesilazadap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/digogogerelow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xamunodobesezuwenetubaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1750/1852/files/85009454253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0371/5481/files/musegisonilesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1701/9292/files/31952581226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9105/9097/files/80256563092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0011/8943/files/proses_metabolisme_lipid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4948/3426/files/kyou_kara_maou_manga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4233/2057/files/carranza_libro_periodoncia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/netosowupibupolimuzu.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_off0000a551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA551 5628 bytes
SHA-256: 9b1345887fd4fc9ecbc1956d409481234a69a80be49478ef1069e0a03d64ea3b
font_01_sfnt_off0000b854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB854 10076 bytes
SHA-256: 5e010c66216cea733a6b13476757bb348188bf388d34d9f588307722b46f1c9d

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