Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5a618ebb9716cc…

MALICIOUS

PDF

49.9 KB Created: 2020-08-11 23:00:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8bcdfb3929ff99fe8eda37acaa5e1bff SHA-1: c921f9aa4c9b6f13a1a4c490f4a3685aa15f0bf7 SHA-256: ba5a618ebb9716cc7a2fcc8d68b0f672cf5197f5a12ed071ff0979756d8a5c36
194 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=plasmid+dna+isolation+by+alkaline+lysis+method+pdf, is designed to redirect users. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of numerous Shopify links suggests an attempt to blend malicious links with seemingly benign content.

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=plasmid+dna+isolation+by+alkaline+lysis+method+pdf In PDF document text
    • http://files.bristolwomeninbusinesscharter.org/uploads/1/3/0/7/130739826/d9ea7aee256333.pdfIn PDF document text
    • http://files.duffdesigns.net/uploads/1/3/0/8/130874050/regaguzogegolabolo.pdfIn PDF document text
    • http://files.ogdconsultinginc.com/uploads/1/3/1/8/131858661/49892916e98aa6.pdfIn PDF document text
    • http://files.happygalsvintage.com/uploads/1/3/1/3/131398010/9825440.pdfIn PDF document text
    • http://files.colquittcountysaddleclub.org/uploads/1/3/1/4/131453436/4a8e2.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/1/0437/5206/3125/files/bharat_acharya_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/47146777855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1935/files/76148192747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/supofitokopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/bob_s_burgers_season_8_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/vatamemavobosunaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6060/9703/files/53775734845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1938/6526/files/pezuzonap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9164/7894/files/joxotawexujepifofepiwe.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 7

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_off000084f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F5 5492 bytes
SHA-256: 936e997300c116ef145cb127bd3174f131dd2ae22507bc0826d00e4914b07fba
font_01_sfnt_off00009784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9784 10136 bytes
SHA-256: 026aeaecaf74cf5e8b7d035438838147a1319b5cb04f71f3bb2ba4b045c00414

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