Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e4279ad00dcd7c…

MALICIOUS

PDF

44.9 KB Created: 2020-08-05 23:31:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b30ae23ec6ad5b4f895bcd524981c25 SHA-1: 66c6ee712f85bd47b248f63f2127e64900c6ff14 SHA-256: 67e4279ad00dcd7c6cdb43f223f49c2742bd2f49984ec501201ced6bfb3911c0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a link farm, aiming to trick users into downloading more PDFs. The primary redirector URL is identified as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or SEO-based content manipulation tactic, likely intended to drive traffic to malicious or spam sites.

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.com/pify?keyword=nautical+almanac+2020+pdf+download In PDF document text
    • http://files.almamusicstudio.com/uploads/1/3/1/3/131398091/zubopurula_mifesefujap_minafeguxe.pdfIn PDF document text
    • http://buxexe.jodykshevins.com/uploads/1/3/0/8/130874104/xokozazatafirizizewi.pdfIn PDF document text
    • http://files.lisadrew.store/uploads/1/3/0/7/130775135/titab.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/1/0434/4391/2856/files/75906995559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/biodiversity_and_its_conservation_class_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3224/7445/files/rigejovenowesozamipokosav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/wewupodile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/pazemanusubavok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mubexuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6214/8763/files/gagetorifivizemazoralasip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4932/8533/files/netekudimuwasejavotowonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8244/0103/files/7353766681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/gurunifitovizafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6515/5487/files/89985121361.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
🗂 Part of campaign: almamusicstudio.com 3 samples

Related samples 4

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_off000065ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AB 5364 bytes
SHA-256: 9859ec4131a2e449050920c308fa71f69deba4f8565092f8cee75a2ef1aee62b
font_01_sfnt_off000077f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F7 14488 bytes
SHA-256: 63ed44943c19aeedcfdcd1cae1cc5f01e7b516aa23755215f1900f5a698add1b

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