Malicious PDF — malware analysis report

Static analysis result for SHA-256 666e386064043fa7…

MALICIOUS

PDF

42.7 KB Created: 2020-08-04 05:31:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46999ff2d1080c1fd3a8abdc42914c69 SHA-1: 3cda8e14d7328bdf774169d4d4605fa90d50bed7 SHA-256: 666e386064043fa74adc57271d97687f215d61660b7fc81540989283549bc0e7
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to SEO redirectors and potentially malicious infrastructure. The heuristic firings indicate a link farm designed to redirect users, with one specific redirector URL identified as malicious. The document body, though heavily obfuscated, contains a reference to the malicious URL, suggesting an attempt to disguise the malicious intent.

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/pify?keyword=atlanto+axial+dislocation+pdf In PDF document text
    • http://files.tmis.us/uploads/1/3/0/9/130969166/f7ed97b25.pdfIn PDF document text
    • http://files.lavishsalonhershey.com/uploads/1/3/1/4/131407138/2319484.pdfIn PDF document text
    • http://files.hellohuffypuffs.com/uploads/1/3/1/8/131856166/lepuboluj.pdfIn PDF document text
    • http://gabif.jandbmkt.com/uploads/1/3/1/0/131070718/puboroxo.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/1/0428/9573/6988/files/acheflan_creme_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/49552097069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/nugosaxubigebogojupiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/vunavalonixipebebiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6472/8479/files/jasco_universal_remote_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40169505762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9776/6553/files/66023451214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/41167818958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6370/files/72538182059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4631/files/xugojumev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/tokujerafavovasixiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/wudurexorujatolumor.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 5

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_off000069ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BA 5112 bytes
SHA-256: be167ca4b41be0a0fcee33c779c9fe5940a3ef211baa96e0364ba180c3f19359
font_01_sfnt_off00007b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B41 10168 bytes
SHA-256: 33b35c7d8da65705e748448a9d8d5c980c385765cc12ce5ca2aca28faef1b786

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