Malicious PDF — malware analysis report

Static analysis result for SHA-256 8164e0adcfca18ef…

MALICIOUS

PDF

42.4 KB Created: 2020-08-16 21:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25abf2b9981b14920783ff086c8b2c57 SHA-1: a97125cf8734cf37d3ddece99761448dd1dfda13 SHA-256: 8164e0adcfca18ef333e5353fdce08b44d7539e0d7cac68fa75b9b645b19206e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified as a redirector for phishing or malware distribution. The document body, though partially corrupted, contains text that appears to be a lure for a "foundation shade guide." The presence of numerous external links, many pointing to PDF files, suggests a link farm or SEO poisoning tactic to increase visibility and traffic to malicious sites. The ML classifier strongly indicates malicious intent.

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=mufe+hd+foundation+shade+guide In PDF document text
    • http://mopovo.xylemstem.com/uploads/1/3/1/4/131438759/8f8b7c57667bd.pdfIn PDF document text
    • http://wobemi.alexandriatalley.com/uploads/1/3/1/6/131606122/gopax_panisaxaze_nofavarewunuwe_vukinusev.pdfIn PDF document text
    • http://files.bsp500.org/uploads/1/3/0/7/130775150/4970398.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/1/0448/3717/5456/files/91837096958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3534/files/free_download_quran_english_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4479/7605/files/2015_acls_provider_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/vegifimupogejego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1128/4885/files/tejapegilezile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2549/7239/files/radefunurebaratojiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8724/0095/files/60317218031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8739/6004/files/traumatologia_y_ortopedia_pediatrica.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_off0000657c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657C 5048 bytes
SHA-256: 5adcb647007b62091b9d25c8d4fc726f452620222d6d6d292f0fc7dac54fad2c
font_01_sfnt_off000076b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B2 11356 bytes
SHA-256: f23dccea8e1932903662e8cf852e04b4c023610e935fc711733c7dae413980e6

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