Malicious PDF — malware analysis report

Static analysis result for SHA-256 66989c66eae47bdf…

MALICIOUS

PDF

40.3 KB Created: 2020-08-24 09:36:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26a529ccef4ba8d8b1097dedff1a7df1 SHA-1: 42e519853a6c8de7b6dcbf742a24fadb6b1b1728 SHA-256: 66989c66eae47bdf8a3c2b1ccc578b2b6a62f432bf0b5a60574fa3dac0131a02
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector for phishing lures. The document body, though heavily obfuscated, contains text and URLs suggesting a scam related to visa forms. The presence of numerous Shopify links, some benign and some pointing to the malicious redirector, indicates a link farm designed to obscure the true destination.

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=thai+on+arrival+visa+form+pdf In PDF document text
    • http://files.axaofalps.com/uploads/1/3/0/8/130813906/tosofesebiw.pdfIn PDF document text
    • http://bejut.fflnwo.org/uploads/1/3/1/4/131407440/kivewusipukiluzeg.pdfIn PDF document text
    • http://misefiz.cambridgeintlschool.com/uploads/1/3/1/3/131383541/bced432f6.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/1/0428/9835/8432/files/11067845032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7837/6853/files/godul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/66122677069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/metabolism_of_sulphur_containing_amino_acids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/17782032727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/xiwelemubebixuwajedop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/14730414280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8873/1543/files/7540871770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9307/2808/files/posavitilesivub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5470/1463/files/siyavula_grade_11_physical_science_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9866/7163/files/ansi_sql_2020.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_off00006081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6081 5292 bytes
SHA-256: 57b07fbd836c43f95a47b2da43bede025c39c54eb83ef5bbac283765dfa9af63
font_01_sfnt_off00007253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7253 10024 bytes
SHA-256: d3273ccafd577a2abb7d7faab99d1ecf4be97ea45bb5ab0f8f9bf06faef473fe

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