Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4b724d6430a255…

MALICIOUS

PDF

58.3 KB Created: 2020-08-06 06:29:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 587455d10372bca94e073bb4b8683833 SHA-1: 0a654ad04556728e246c5522de5a191bfbadf362 SHA-256: cc4b724d6430a2550820a1673ac9d972709fc4cb8fb9969c7d8cd31fef4c1445
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a dictionary download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to host further malicious content. The document body, though heavily obfuscated, contains the target URL and references to a dictionary PDF, reinforcing the lure.

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=concise+oxford+english+dictionary+12th+edition+pdf In PDF document text
    • http://kufifuj.anelemorris.com/uploads/1/3/0/7/130738731/0834b3e2866f0f0.pdfIn PDF document text
    • http://files.realestate-stlucia.com/uploads/1/3/2/6/132695714/mesezufolulawu.pdfIn PDF document text
    • http://files.catch90.com/uploads/1/3/2/8/132814342/9955069.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/fatevidirex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8642/9861/files/86178835211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/tozelovexekerirowiniwewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8658/3710/files/78648783106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/zokawuzujofewaxuselowopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7725/4814/files/the_blacklist_season_4_episode_1_putlocker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/10996372563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/ledap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jatebilebasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/99106142253.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7019 12580 bytes
SHA-256: 5228bab3fb294fb5eb8ca46ea079862505158c5c3cb3b97beb85077ad4c739dd
font_01_sfnt_off00009843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9843 5584 bytes
SHA-256: 1cb77d3f2a3d7f04c7dcc16d40f627607ab670b532a0f2501c25e145f184df05
font_02_sfnt_off0000ab46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB46 10108 bytes
SHA-256: aaf380f9bb882d14f9f92fca8e2f82ca0227df3e1bf836064f91d96ddf553a0a
font_03_sfnt_off0000cdc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC6 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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