Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0487081dd4f5728…

MALICIOUS

PDF

44.6 KB Created: 2020-08-23 13:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1f899238b838250312939fce3ba70cc SHA-1: cdf553d1f9b86152e000c59fd3875e0c8495d9a4 SHA-256: b0487081dd4f572883aaccce1b8438a1658d6d696140d6ec23c467f660f38f75
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one pointing to a known malicious redirector. The PDF also exhibits characteristics of an SEO link farm, suggesting an attempt to manipulate search engine rankings or distribute malicious content through a large number of seemingly benign PDF files. The ML classifier strongly indicated maliciousness.

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=guide+dog+pub+southampton In PDF document text
    • http://files.5k-mods.com/uploads/1/3/0/8/130874382/dd1262750.pdfIn PDF document text
    • http://files.innerdolphinawakening.com/uploads/1/3/1/6/131606035/kumuvefajolen.pdfIn PDF document text
    • http://pafoja.ourfrenchimpressions.com/uploads/1/3/1/8/131856772/3943877.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/1/0430/2009/1555/files/alimentacin_sana_equilibrada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/10711925173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6703/8109/files/php_video_streaming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/kenmore_stove_manual_troubleshooting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nanejixiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/free_printable_math_worksheets_elapsed_time.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4167/7731/files/pelukeguwujufinenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5480/7717/files/openssl_convert_key_to_pem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0492/7905/files/balanced_scorecard_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3720/2344/files/tusikipodivazupodibafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xutuxajaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1444/6489/files/haya_bukhari_novels_free_download.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 8

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_off0000672c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x672C 5416 bytes
SHA-256: 854ee97c8f6cb0319059c9f76ac3eb166b4179084731e0916f69da84ff1a26b5
font_01_sfnt_off00007976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7976 14028 bytes
SHA-256: a40ac5b613a988892c98c70efea335c0ea274e04c76a908f59ba816651ac8bbe

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