Malicious PDF — malware analysis report

Static analysis result for SHA-256 efd9e142df46b970…

MALICIOUS

PDF

76.4 KB Created: 2020-08-23 19:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d612d601b35c5364b82d3c1723e6a3b SHA-1: 1e881d28104447cc9a70031ceb64ec57c1403d9c SHA-256: efd9e142df46b970d785eaf70c657ccd9af469e05229c8c7165d3fb397de33c7
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating that it directs users to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Australian passport document number format' and the malicious URL. The PDF also contains a heuristic firing for PDF_SEO_LINK_FARM, suggesting it's part of a larger network of linked PDFs, likely for SEO manipulation or to host malicious content. 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=australian+passport+document+number+format In PDF document text
    • http://figimuxep.sunsetskinboutique.com/uploads/1/3/1/4/131454215/nazile.pdfIn PDF document text
    • http://files.pammiller.co.uk/uploads/1/3/0/8/130874284/4178782.pdfIn PDF document text
    • http://files.deltatechindustrialpark.com/uploads/1/3/1/4/131483234/bekuwomodifened_popejuw_zonumiwe.pdfIn PDF document text
    • http://files.kemslashes.com/uploads/1/3/2/6/132682899/kuzadifa-tawususipirojor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/9645/6613/files/64015248979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1904/1954/files/react_native_action_sheet_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0555/8436/files/kuwutikalux.pdfIn PDF document text
    • http://zumato.yazan.people.ua.edu/uploads/1/3/1/6/131636755/8069456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8358/6977/files/gexelebek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0120/8232/files/255293981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/43905927619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6043/5873/files/29379613916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1569/files/76772017878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8708/5220/files/hssc_lab_attendant_result.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/lowipudipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3810/6023/files/no_excuses_brian_tracy_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7773/9172/files/86111377166.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC82 5432 bytes
SHA-256: bd9c9940fd1b94b6538c98a603d888ec44e3085e5de85a1cfe0a61f426735cae
font_01_sfnt_off0000dec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC9 8436 bytes
SHA-256: 1640fd32304170638016e5f698c224b2630fec06af0c09fa4402e242fbb745fc
font_02_sfnt_off0000f660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF660 14364 bytes
SHA-256: 093e564feea7910a3df6ec870bfe5f3423e9cf36b7bec772c5db26e57f13515b