Malicious PDF — malware analysis report

Static analysis result for SHA-256 43d0d842856149fd…

MALICIOUS

PDF

40.5 KB Created: 2020-08-20 02:17:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a5db124dab167e7ea478b72a9b858ca SHA-1: e874803a1205de48ff7eb56dc2ec4b5334153a47 SHA-256: 43d0d842856149fd7161b3e665cc97d3f3481b7550f6eb9a85da0f84338a34e4
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Mobo market app store apk' and references the wkhtmltopdf tool, suggesting a lure for potentially unwanted applications or malware. The presence of numerous external links, many hosted on Shopify, points towards a link farm or redirection strategy to mask the ultimate malicious destination. 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.cc/pify?keyword=mobo+market+app+store+apk In PDF document text
    • http://files.redmoonpathways.com/uploads/1/3/0/7/130739475/kezodatim-xaluvuwudatipus-niworojarer.pdfIn PDF document text
    • http://files.bigsmokestudios.com/uploads/1/3/2/6/132681394/pazonizapapu-gunawujotimufe-kavofixevedopi.pdfIn PDF document text
    • http://files.baplink.com/uploads/1/3/1/1/131164424/8da57.pdfIn PDF document text
    • http://mizopagez.beardedbomb.com/uploads/1/3/1/0/131070894/tikavoliz.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/1/0435/5509/4677/files/24421021603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4785/2959/files/bean_seed_germination_lab_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/64242133407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/music_notes_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2736/5031/files/25344025168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5113/8715/files/tufaxepopimasigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3440/2216/files/pawulegutumoxunatofom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/bifakexomobifovawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5943/0047/files/87322134083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3256/7195/files/loganajepozatelafiruronu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8538/9212/files/february_2019_calendar_template_editable.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 8

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_off00005a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8F 5140 bytes
SHA-256: bdef2c55a4df06c9149bbc7b031ec4d2f3c2435dc4f46cee08b81ed5ffbe5567
font_01_sfnt_off00006bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF6 13996 bytes
SHA-256: ec21be15340223292b65e1e1ac81825a7ced80453da033d400282cc113a310b0

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