Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb6a4a7141c80e9…

MALICIOUS

PDF

53.8 KB Created: 2020-08-09 12:17:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e1338b27df6afe95bed03f632c2370fe SHA-1: 18cc36fd122b68401a2312aaee2705f83ff1d0ca SHA-256: 5bb6a4a7141c80e9a8dd216f93cfce3a3fa1afa740270327331daf0f726ff467
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service that is known to host malicious content. The document body itself contains the primary malicious URL, suggesting a phishing or scam lure disguised as a free download. The ML classifier strongly supports the malicious verdict.

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=persona+bergman+script+pdf In PDF document text
    • http://files.gulnurozdaglar.com/uploads/1/3/2/3/132302913/38e83.pdfIn PDF document text
    • http://files.gunnessfinancial.com/uploads/1/3/1/3/131384468/8082266d38.pdfIn PDF document text
    • http://butozeki.dixieheritage.net/uploads/1/3/0/8/130874254/bfb7b68.pdfIn PDF document text
    • http://files.thetaliving.com/uploads/1/3/0/7/130775747/povuranimek.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/1/0429/7257/7946/files/african_proverbs_and_their_meanings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/tarrant_county_sample_ballot_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/7770754460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4248/0021/files/919065213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/83582582701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/64670057700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7075/files/57701615502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/94571196303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/daxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6546/5249/files/68879036059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4853/4167/files/xerol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/40244287472.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_off0000953c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x953C 5584 bytes
SHA-256: d3f8fd0add668ffc78f76362e561f26d696d10458ebaf402055d52060cb2e8d6
font_01_sfnt_off0000a81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA81E 9904 bytes
SHA-256: 284acbcbae14f14e7816f71ff13f26383d4f6a8e8403aa8879222c28748a8563

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