Malicious PDF — malware analysis report

Static analysis result for SHA-256 43fb7de43e972be1…

MALICIOUS

PDF

40.6 KB Created: 2020-08-06 07:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df832068690147232a45b01b83ea9a63 SHA-1: 293af6baa1bec220878ce193bbc8fbe08f1402ee SHA-256: 43fb7de43e972be19b1693b51295fe1577bf1e806ebafdc1fec7df6bc75448af
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it's a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=carnes+rojas+y+blancas+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to other PDFs, likely for SEO manipulation to distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF. 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=carnes+rojas+y+blancas+pdf In PDF document text
    • http://files.nickcharlesmadson.com/uploads/1/3/0/7/130739362/9640546.pdfIn PDF document text
    • http://files.alimaclaurin.net/uploads/1/3/0/8/130874490/jokusukoxuvanovobowo.pdfIn PDF document text
    • http://files.novelsf.com/uploads/1/3/1/4/131483550/mataxopawowojuvuba.pdfIn PDF document text
    • http://files.punkmonger.com/uploads/1/3/2/6/132681194/zaxudolawed-takidexubaki-rezozavox.pdfIn PDF document text
    • http://files.thebobgallery.com/uploads/1/3/1/0/131070972/zuponavibev_jebaxe_subozatigoneba_jagovaz.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/1/0429/8568/5153/files/rikakamuxaboda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8846/1478/files/velug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/nezakena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2354/9094/files/daxukalibidukidub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4828/8934/files/50237828349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8121/8710/files/37647554271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4945/0663/files/97073187667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kiragin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/86707380388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/charles_petzold_c._o._d._e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0952/1317/files/78344797799.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_off00005e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E17 5372 bytes
SHA-256: 8faf44c9edbdf65140837d2cbd1adf158531fd1f660921782725fae154f773aa
font_01_sfnt_off0000706f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706F 11528 bytes
SHA-256: faccfe8c0794723f4e00ee93968f8479a3a28abb2d6d7fa77814fa48326fb227

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