Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06723cee65bc4d9…

MALICIOUS

PDF

44.9 KB Created: 2020-08-08 08:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e93040d80f885f13da23dcc8df66a866 SHA-1: 5c2bd53a319394b2091370df5b8d8e0937802ab2 SHA-256: b06723cee65bc4d93ed90e1f0f188275369c2257c3c564474c68f2375e2f2fe6
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, forming a link farm, with one link identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary intent appears to be directing users to malicious infrastructure through a deceptive link farm.

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=carmilla+pdf+francais In PDF document text
    • http://files.dunhamsseptic.com/uploads/1/3/2/6/132682134/3972622.pdfIn PDF document text
    • http://files.jackielhutchings.com/uploads/1/3/0/7/130739614/nalusoweginawuj_numalijoki_woromejusipik_vulufe.pdfIn PDF document text
    • http://files.mentoravenuepreschool.com/uploads/1/3/1/3/131383764/6323118.pdfIn PDF document text
    • http://files.brianboydmotorsports.com/uploads/1/3/0/7/130775921/62ae44a8f79.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/1/0446/0855/3123/files/mycom_screw_compressor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2744/8476/files/43692150345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3041/2450/files/frederick_ahl_aeneid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/gizowudozuvomapatip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4300/4322/files/jonutudufopot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/juzopuzenafososokazulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2090/9735/files/78935218393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0595/8565/files/nekajufezolak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/3m_aluminum_tape_425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3010/2694/files/apalutamide_package_insert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/78673385726.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_off000065bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BC 5208 bytes
SHA-256: a488aeb49b1f43aa1a9ebaa1d4f10aa15687aaa301c777ffb38abf032475db24
font_01_sfnt_off00007757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7757 15256 bytes
SHA-256: 652d5555d2c635456d2212c76a7f386fe80fb0b64b5be2480b872f2f7087ccbf

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