Malicious PDF — malware analysis report

Static analysis result for SHA-256 9020b9fabdfdd529…

MALICIOUS

PDF

53.4 KB Created: 2020-08-15 22:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 495822e7375803b0a6b56e0a03aa094f SHA-1: ab967cb6405b51232f9042a4af8e03c8735e9c53 SHA-256: 9020b9fabdfdd529e0cf363640c8ec36f60b31eef3b9e9e07b24b20965f54150
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. This indicates a phishing or redirection attempt. The document body is heavily obfuscated and contains the malicious URL, suggesting it's part of the lure. No scripts were extracted from this sample.

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.ru/wb?keyword=machine%20learning%20algorithms%20using%20python%20pdf In PDF document text
    • http://junej.astrogeekic.com/uploads/1/3/2/6/132682076/suvupujaxizu-pariwapini-tanixabax.pdfIn PDF document text
    • http://files.annshoemaker.com/uploads/1/3/1/4/131453177/9370e6e962b6.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/1/0430/5109/0077/files/piramide_alimenticia_mexicana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5802/files/wojukatexav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/netogag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/65397642165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8161/9870/files/mugaxele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/32924970325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/23174956127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0433/6040/files/92440260584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/ginisikal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1238/2116/files/bodybuilding_exercises_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5436/6877/files/dujutujeduregejoj.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 1

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_off00008fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FBF 5676 bytes
SHA-256: 644612d2f1cf5cdcd4307d1d161e9a476c1e54fc11cc9149abdd06d63f2204f6
font_01_sfnt_off0000a2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2F0 11336 bytes
SHA-256: 97a52bc2916e1163e3c83fe88f7e898ff1d825f49f7ebab3f783f34a7a882d36

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