Malicious PDF — malware analysis report

Static analysis result for SHA-256 41434f8f5ae9be20…

MALICIOUS

PDF

134.4 KB Created: 2020-08-12 06:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3df17bddb15b5479cf5d627e1782b0db SHA-1: 361f73b6d1212336ac3f4e39fff1c495fa9f7d9a SHA-256: 41434f8f5ae9be204419401da1a8fa702343b08567acd02bd51917983ce45023
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a 'mapa metro de barcelona 2020 pdf' and the malicious URL itself. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm or a method to obscure the true malicious destination. The primary malicious IOC is the redirector URL.

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=mapa+metro+de+barcelona+2020+pdf In PDF document text
    • http://files.zuntzmusic.com/uploads/1/3/1/8/131856498/2747609.pdfIn PDF document text
    • http://regefawev.evelineverhulst.nl/uploads/1/3/1/3/131383483/6281708.pdfIn PDF document text
    • http://files.mendenhall-lab.org/uploads/1/3/2/6/132695543/mativazekuda.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/1/0431/1266/1146/files/ninexixeri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7522/3206/files/56178496000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/an_introduction_to_applied_statistical_thermodynamics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/77553828961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0963/8553/files/xopibopawakeposo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0913/8075/files/bogudefowijilijenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6510/4791/files/24942097044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2176/0672/files/86284105948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/99639789801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0390/3127/files/wefosozukixofosuweligejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2446/3525/files/susalove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7794/9848/files/railway_stenographer_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0594/1672/files/cashflow_game_instructions.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c0dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C0DC 5540 bytes
SHA-256: 7bea6d35f3d9b0e092ba47af356e00891cb36b169f7271a596ceadee588698a0
font_01_sfnt_off0001d398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D398 2116 bytes
SHA-256: 29a3819fcf58c07b1a4ca7aa4d6f4f3da919668fc69abac3fb26ba101e349abd
font_02_sfnt_off0001dd48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DD48 15216 bytes
SHA-256: 6fe0a96898285f258922a29b85b4ac1c7311891d55b25d48150f6057aa18a5c3

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