Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ae66917ed81933a…

MALICIOUS

PDF

56.5 KB Created: 2020-08-06 20:09:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02efb96be5cacdf1173c0db2c45c6eda SHA-1: c31039b14ce56b12bdeb516a2560160162e5b6ee SHA-256: 5ae66917ed81933a193b47887b7bdd0debffc28842f81637f5060783a88980ae
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to external resources, many of which are hosted on domains designed to appear legitimate but redirect to malicious infrastructure. The presence of a 'download button' lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The primary redirector identified is https://ttraff.ru/wb?keyword=marshall%20mid%20anc%20user%20manual.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=marshall%20mid%20anc%20user%20manual In PDF document text
    • http://files.nonprofitleadershipcollaborative.org/uploads/1/3/1/3/131378776/581746.pdfIn PDF document text
    • http://files.acornspre-school.com/uploads/1/3/1/3/131384127/5997725.pdfIn PDF document text
    • http://files.toapinrisefarm.com/uploads/1/3/0/8/130874326/719482.pdfIn PDF document text
    • http://sojod.twyfi.org/uploads/1/3/0/9/130969772/sexat.pdfIn PDF document text
    • http://files.minnesotacenterchorale.org/uploads/1/3/0/8/130814492/xilitukidozufe_dakesa.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/1/0440/6244/1637/files/32439967368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0955/5107/files/64141771228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0413/2508/files/multiplication_and_division_worksheets_for_grade_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/50331595977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/4152305558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/69528436591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0139/2801/files/administracion_de_empresas_unitec.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4636/2533/files/wawebovawotevup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5491/3943/files/22773356203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3526/1085/files/1989_chevy_silverado_owners_manual_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3833/2312/files/lajijuru.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
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFA 5684 bytes
SHA-256: 7f0db5a1e4edfb10e7f657e7fc849bc954942a2488f9d7ddeba25f34f4659b05
font_01_sfnt_off000072d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D5 5184 bytes
SHA-256: d7676009ba1376963aab4f2fe41a26df7ce91aebc455a2fc324db9ccd76dcefa
font_02_sfnt_off0000844c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844C 6640 bytes
SHA-256: 2da83060ad210a9a1743b04a22b2cc5ebb14ba7af64fbaa5f25da2d26a1b3d84
font_03_sfnt_off000095ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95EA 11912 bytes
SHA-256: cb03000af0a3819dd587dfb3bc41b684c67af96e3ea3225d866a2ba4796f4c58
font_04_sfnt_off0000bc92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC92 16684 bytes
SHA-256: a858ad06ee9285ef990c8ccf5509e6bce71cae8afc7f99ba8a1dcaf33198b628

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