Malicious PDF — malware analysis report

Static analysis result for SHA-256 663367cdd1936c70…

MALICIOUS

PDF

32.3 KB Created: 2020-08-23 00:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d616855ad772d73f4fc7d946dd7c3ce SHA-1: 4d939657878716bbeb7177196dbc4a12b7100b99 SHA-256: 663367cdd1936c70e8f8ea7475b46d3fb8a09e1f0fb87d900d3cbdcccb12976b
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary link to a redirector service that is flagged as malicious. This redirector is presented as a free font download, indicating a phishing or scam attempt. The presence of numerous links to Shopify-hosted PDFs suggests an attempt to create a link farm or distribute malicious content through seemingly benign platforms.

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=above+demo+font+free In PDF document text
    • http://files.supersonicmagazine.com/uploads/1/3/1/4/131437676/1487835.pdfIn PDF document text
    • http://files.alderbowman.com/uploads/1/3/0/7/130775838/29afb62d8cd40.pdfIn PDF document text
    • http://kepusu.spcccmacon.com/uploads/1/3/0/9/130968988/fuxililinimux_tuzosiminidabi_fajefoju.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/1/0448/7525/1879/files/sintomas_del_cancer_de_piel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3616/4774/files/kukajuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/74865813694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/zavuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5032/7455/files/high_school_gangsters_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/a_current_affair_reporter_ben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/xowinasijamogewisuvok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5593/9733/files/61018539915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9318/7989/files/sony_vegas_cracked_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5795/8299/files/1000_solved_problems_in_strength_of_materials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2297/4117/files/aneurisma_de_la_aorta_toracica.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 3

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_off0000421b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x421B 4824 bytes
SHA-256: c0d1ad9fb784b66d9d66a570bb06b8f966a4afc2808a0b1c43ac70617004c414
font_01_sfnt_off00005270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5270 10028 bytes
SHA-256: 955bae7b8ba3acecb918bed313f33df133c29851caab1894a363c6be3844456e

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