Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b64719f274a4eeb…

MALICIOUS

PDF

35.6 KB Created: 2020-08-05 18:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f18c9c521b303a4843b0f4e03e7eb20b SHA-1: 401a9ba7a46b4a55b2ecadae12b8a6481bf86212 SHA-256: 7b64719f274a4eeb925a3e970d888e1f2343c9357c6e18ec6b9e19e4f1dfac4c
194 Risk Score

Malware Insights

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

This PDF file contains a link farm designed to appear as a service manual download, but it redirects to malicious infrastructure. The primary redirector URL is `https://ttraff.cc/wb?keyword=hp%20elitebook%202540p%20service%20manual%20download`. The ML classifier strongly indicates maliciousness, and the presence of multiple embedded links to potentially malicious redirectors supports a phishing or scamming attack pattern.

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/wb?keyword=hp%20elitebook%202540p%20service%20manual%20download In PDF document text
    • http://files.sevahealingarts.com/uploads/1/3/0/7/130776255/nelipipe.pdfIn PDF document text
    • http://files.blackcreekcc.org/uploads/1/3/1/4/131408970/3499070.pdfIn PDF document text
    • http://files.giftedsupportnetwork.org/uploads/1/3/1/4/131453097/4810043.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/1/0437/9112/2584/files/cae_exam_maximiser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6036/2392/files/18587009808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/63593153884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/anfotericina_b_farmacologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3949/7112/files/72760360168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7557/5709/files/appareil_genital_masculin_et_feminin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/dizuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/19943335223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/kazesalusigowagabujup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/binomial_expansion_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/juleletutipelodowosovejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/google_play_brand_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/najedunuvojopatulipu.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_off00004a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6D 6024 bytes
SHA-256: 2ccc30aabe99a8180f94c032542d87dcf1dd9c61a5f5df88c7420cd1a890ac4c
font_01_sfnt_off00005eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEC 10216 bytes
SHA-256: 2fb2c1f89f2d62ef86a731b0011b697b9223604a6c5b6b760a4ec5e9eb005fb1

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