Malicious PDF — malware analysis report

Static analysis result for SHA-256 16b06f22bb202e2e…

MALICIOUS

PDF

47.4 KB Created: 2020-08-26 10:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac1ca7503550d390bf76c39ad88f87d7 SHA-1: e9f447145ff9fa7366f8cfb3c4c1ef80f6986708 SHA-256: 16b06f22bb202e2e8e3b613947dc54d3099ef9e4f32219f9f92c91f57c847c8b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing lure. The primary redirector URL is associated with malicious activity. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF filename, suggesting a social engineering attempt to trick users into downloading further 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.link/pify?keyword=ice+station+zebra+book In PDF document text
    • http://files.givoie.com/uploads/1/3/1/6/131636725/b72ec93305.pdfIn PDF document text
    • http://files.trueelevation.org/uploads/1/3/1/0/131070765/4807bfe0287e0.pdfIn PDF document text
    • http://files.tinshedfarm.com/uploads/1/3/0/7/130738806/cf2634439.pdfIn PDF document text
    • http://files.latchcottage.com/uploads/1/3/1/4/131453847/pivesojoj.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/1/0431/3851/5098/files/zunewilajopepuvexitoveki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0994/1414/files/ziniba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/beledazuporabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6722/7811/files/50283739364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/degobik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4948/2400/files/zazumotiwexigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7750/1079/files/vaastu_shastra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/41282263225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/gumatezokitujovuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/mutisatakadozifiretonol.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
🗂 Part of campaign: acscmerch.com 7 samples

Related samples 4

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_off00007dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBF 4952 bytes
SHA-256: fa2a2261d1dae9c182bb9fe83b0790e52b0cbe34b34586374082408973bde6b0
font_01_sfnt_off00008ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA1 10076 bytes
SHA-256: 8b50c34318167ba5ca12f0b319d31ac322567fe9ef23a3d130fded3e630c1495

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