Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc8a52e37269e42…

MALICIOUS

PDF

155.1 KB Created: 2020-08-05 04:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8df6d3385b342da44a708edf2d9d5b5b SHA-1: 3e4bc233a1eb6e3964c35fddd1687b498fbceef6 SHA-256: ffc8a52e37269e420f59eead5039059ec6001bf16bde54d0e9b9e25e65b5397e
134 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a known malicious redirector. The heuristic firing 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, indicating the document is designed to lure users to a harmful site. The document body itself is heavily obfuscated but contains the malicious URL, reinforcing the attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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=analise+combinatoria+pdf+morgado In PDF document text
    • http://files.thelittleacorninmontgomery.com/uploads/1/3/0/8/130814466/powazizurow.pdfIn PDF document text
    • http://files.riceroadchurch.com/uploads/1/3/1/4/131453251/ba1b5350.pdfIn PDF document text
    • http://files.bennyjenkinsbloodline.com/uploads/1/3/1/4/131438423/sonerulenuterupe.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/1/0435/8825/5912/files/sos_battle_serebii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/raxame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7258/4861/files/convert_openoffice_doc_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/muwemokenakugexun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0107/0247/files/64498601611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0467/4727/files/fusionner_plusieurs_documents_word_en_un_seul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6787/4207/files/78114920831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5682/4471/files/84295285539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/47971423778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0372/3428/files/mogopatoxek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/53118115198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/everquest_tailoring_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5945/3860/files/17657383608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/28441523113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5009/9107/files/magisterium_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0001fc4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FC4D 5604 bytes
SHA-256: 97b1aefe2f52163f9bc844b74110e3c684a4992af57dba961cc70f4977d92e65
font_01_sfnt_off00020f39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20F39 19488 bytes
SHA-256: f28745b469f0ef37e10830629e0cf420b189e491e290c1fb23c7fe5c1f6c730a
font_02_sfnt_off00024909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24909 16132 bytes
SHA-256: 43e84046d57c5d8edad47de9228ce36feb53c5e515436c294a71041590f3a3a6

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