Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2cdc3806bd04e0b…

MALICIOUS

PDF

38.7 KB Created: 2020-08-04 11:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d00b054fe3ca37d2dd121c081d8ae12 SHA-1: da7f8f31b34d3af577c5967a6e6c2cae539a33f2 SHA-256: d2cdc3806bd04e0bcb18b3922fe563e18f60210aa2261d18dacf2c5dd1474122
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body text and metadata suggest a lure for downloading a 'Hoja de vida' (resume/CV), which is a common tactic for phishing or malware delivery. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating an attempt to distribute malicious content or engage in SEO poisoning.

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/wb?keyword=hoja%20de%20vida%20minerva%20para%20descargar%20pdf In PDF document text
    • http://baxedev.fircrestumc.org/uploads/1/3/1/4/131408100/b54b004cf3500.pdfIn PDF document text
    • http://dagir.sebastopolredwoodhouse.com/uploads/1/3/0/8/130874422/vimafulolafavalovede.pdfIn PDF document text
    • http://files.twindphoto.com/uploads/1/3/1/0/131070192/zowafo_kofuvebepe_zuzorewikoso_kevezoganari.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/1/0428/9835/8432/files/48054684450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1642/7419/files/wonamove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/bevagekasozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2510/4028/files/16357710640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/12578759726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/88838778421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/vexiraxijopis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/sosyal_bilgiler_testi_6._snf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5802/0000/files/biosafety_cabinet_class_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/94939861409.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 1

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_off0000560b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x560B 5540 bytes
SHA-256: cc6d980eaa5959af8997a06938ec6303ed192eb2a46f7c47a0436a02270c13c0
font_01_sfnt_off000068d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D8 11008 bytes
SHA-256: a5bf48d8d52853f9fe0bf56af21cc57414a9e3e3a7bcf7f609a71b8d02918707

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