Malicious PDF — malware analysis report

Static analysis result for SHA-256 666777df2aed5837…

MALICIOUS

PDF

42.6 KB Created: 2020-08-06 12:46:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60d10344dc03a84d5345a01ef535ac67 SHA-1: 67a9a874e0467602b00bcf767a68b2a939d3f4d5 SHA-256: 666777df2aed5837b079737c886ce7677b3f3afaf443dcde3a1d33045b255b77
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external resources, many of which point to a redirector service known for malicious activity. The primary lure appears to be a "free download" disguised as a chemical reactions PDF, which ultimately redirects to `https://ttraff.com/pify?keyword=balancing+chemical+reactions+pdf`. This suggests a phishing or scam campaign aiming to redirect users to potentially harmful content.

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=balancing+chemical+reactions+pdf In PDF document text
    • http://files.yeeplace.org/uploads/1/3/0/8/130813427/2605567.pdfIn PDF document text
    • http://files.consciousbirthmanila.com/uploads/1/3/2/8/132815183/nonevijibufax_pasojed_tuwomuxe.pdfIn PDF document text
    • http://files.opentothedivine.com/uploads/1/3/1/4/131454238/1382281.pdfIn PDF document text
    • http://files.jabramowitz.com/uploads/1/3/1/4/131483083/kunes-maneliwafezuvib-dobajelepubaja-xoxuvaworirum.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/1/0431/3281/3473/files/csv_to_vcard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0699/9203/files/doppler_de_arteria_cerebral_media.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8279/files/dajedaxolevebisupape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7804/9189/files/xejixujepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7384/6952/files/dialysis_disequilibrium_syndrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8809/9993/files/kekilinujiveturezifiwexuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8246/files/tikibinimelejixalupoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/18721114592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3771/0744/files/57501560233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3146/8951/files/pejamufejanubusawam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6368/0929/files/28740622836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7418/2563/files/mopox.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_off00006777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6777 5616 bytes
SHA-256: 6f32b11fc656078d2c80774710ca05e08d5c7530931e3fed95766d9894095cac
font_01_sfnt_off00007a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A64 10320 bytes
SHA-256: 92fb638635fec9c2fc6b22e4555a127eaa0d25b001c51fdff00ee566b8549fe0

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