Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c04e1d081fa59f…

MALICIOUS

PDF

65.3 KB Created: 2020-09-01 03:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1c9868772be5414f0292c52d9b1fdd6 SHA-1: 41cfe25e33fea4e38db989f8fd894a8f90c646a4 SHA-256: f0c04e1d081fa59f025465bc0637a930d157046b70dada9fc57e43caec793237
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=inelastic+neutron+scattering+pdf'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The presence of a large number of external PDF links, many hosted on Shopify, further supports a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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.ru/wix?keyword=inelastic+neutron+scattering+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/14970662225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/rexamivopomuxemuxugenadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/aromatherapy_books_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6431/6319/files/advanced_cardiac_life_support_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1307/9203/files/47396293376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4900/files/masker_innisfree_sheet_mask_untuk_jerawat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1815/6192/files/zubiginateb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7247/1715/files/dupezukanalugabuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/7389/6353/files/confidential_information_release_form_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/kodatexobinumifix.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0dcf4b_c98c42443aa34a47ab6573bd2eda123c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e02969_40f8d526aed4446bac72e912a543dbb2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8295/7478/files/libro_de_periodoncia_carranza_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6709/5705/files/buwizelute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2858/4347/files/77213041428.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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9134 2912 bytes
SHA-256: 8e946ab76871b4001a8eb2020b863cc680b9804028e4ddcab6f6e8a2704c6764
font_01_sfnt_off00009b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B97 5144 bytes
SHA-256: 8c6f3399e38add20565d0a833598ba26969ffe0983b303a367d88f0fcdc90768
font_02_sfnt_off0000ad15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD15 11588 bytes
SHA-256: 3e0640dad9114212f49a3ff21c7dc3bc96b4c731244b661a0c9dd5e2b3701a5b
font_03_sfnt_off0000d482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD482 16128 bytes
SHA-256: 49753f47dcc57c983fb4b222e20c62ee42016d1f1833236c7eae6758e0db8b65
font_04_sfnt_off0000e972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE972 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3