Malicious PDF — malware analysis report

Static analysis result for SHA-256 225707f00dadefc8…

MALICIOUS

PDF

47.3 KB Created: 2020-08-12 07:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8f7f3bc549f6f9a9f597d4f91bb40ef SHA-1: 52eb83582a8c60b935031234d7af6a385c898846 SHA-256: 225707f00dadefc8fb4b89510a6a560a8db3d8a7b84288e6636c0ff890879ff3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a link farm and the ML classifier's high confidence further support the malicious nature of this document. The primary attack vector appears to be a lure to a malicious site via embedded links.

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=astm+a106+chemical+composition+pdf In PDF document text
    • http://files.rustedrelics.com/uploads/1/3/1/3/131380546/d1d11f.pdfIn PDF document text
    • http://misabod.amazinggrasslawncare.net/uploads/1/3/1/3/131398455/8059055.pdfIn PDF document text
    • http://files.seattosleep.co.uk/uploads/1/3/2/6/132695418/1b7af.pdfIn PDF document text
    • http://files.nickygibbsdance.co.uk/uploads/1/3/2/6/132681409/1730420.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/1/0431/7069/3282/files/pharmacological_classification_of_antidiabetic_drugs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/98447200726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9123/7794/files/the_coldest_winter_ever_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2657/0664/files/pilates_power_gym.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/save_terminal_output_to_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/10536809629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1386/4602/files/91605870937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/converter_to_word_file_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/92736259033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8114/6280/files/zoxisuxatonajomabegebido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6977/5782/files/arpeggio_jazz_guitar.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_off000078ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78AD 5636 bytes
SHA-256: c1634048915c2d7417b6f281c36e7e616105c8d82178d45c9d3a1f4d5f183edf
font_01_sfnt_off00008bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB2 10748 bytes
SHA-256: 523496d0bd60ae821d212e64d6984252f18eb981f0b1357056a1930fd0e27ecf

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