Malicious PDF — malware analysis report

Static analysis result for SHA-256 885f0ba527104070…

MALICIOUS

PDF

34.3 KB Created: 2020-08-25 00:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8d1e78a1c85dc6ea94d24aab6355340 SHA-1: fa116742079a7c3760163970bc91be3a2059f7ef SHA-256: 885f0ba527104070867cb56345225c77caaca0a4dd0fc415e809362a2e3bbe94
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a known malicious infrastructure, identified as a redirector for SEO-based phishing. The document body, though obfuscated, contains text related to a 'vessel berthing report' and includes the malicious URL, suggesting a lure to trick users into clicking. The presence of numerous external PDF links, many pointing to benign Shopify URLs, indicates a link farm strategy to obscure the malicious redirector.

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/pify?keyword=vessel+berthing+report+at+nhava+sheva In PDF document text
    • http://files.niocast.com/uploads/1/3/1/3/131379692/09a53d002c6445.pdfIn PDF document text
    • http://files.vickylneal.com/uploads/1/3/2/8/132815882/nemat.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/1/0431/4238/1725/files/population_ecology_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9289/6920/files/kubukotapibodesilov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7758/0453/files/82163411928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/fond_de_roulement_et_besoin_en_fond_de_roulement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1501/8392/files/baguzivelamekovar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/pezuratovedumuganom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/ielts_fever_listening_test_17_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1399/5672/files/59005958261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6956/2266/files/nebizavikoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/9855847257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3864/4136/files/recetas_para_dieta_cetogenica.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 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_off00004316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4316 5244 bytes
SHA-256: ab6577743d403f870177bc67f2a05dadcbe710344edfa4c23def6c63727f6b81
font_01_sfnt_off000054de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54DE 11752 bytes
SHA-256: 82fb9f30ddef508daed97a9ec2585136e9d2af29ad49c693f0c1ab880689d2a6

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