Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c0c9b8aaed93215…

MALICIOUS

PDF

48.8 KB Created: 2020-08-17 02:21:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3bc8cb3fa9355abe69d216c4ac78cb02 SHA-1: 86ab668c0f01380ab7f95b04c64e5e4a698a059d SHA-256: 5c0c9b8aaed932151b361ba64ea4edca99512e9db19e89de92e42aa31a9b9cbf
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one disguised as a 'down arrow icon' that redirects to a known malicious URL. This suggests a phishing or scam attempt, likely using a link farm to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness.

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=down+arrow+icon In PDF document text
    • http://files.support.famhealth.com/uploads/1/3/1/4/131437740/3357936.pdfIn PDF document text
    • http://files.creturns.com/uploads/1/3/1/4/131409597/6987350.pdfIn PDF document text
    • http://gajolax.kingfencetx.com/uploads/1/3/0/7/130776483/busukazakid-wapiz.pdfIn PDF document text
    • http://xatogo.ygkcombativesgroup.com/uploads/1/3/0/8/130874631/madamezekomulax.pdfIn PDF document text
    • http://files.whynotbeyourowndesigner.com/uploads/1/3/1/0/131070722/9411949.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/1/0429/2935/6959/files/all_dnd_races.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/57466491463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5667/6507/files/33698128998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/nujute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/jimulafipizedov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1161/2578/files/tafadiligetujoxijan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2088/files/liwofodewowiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/kutubikudusejez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tedix.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC8 4024 bytes
SHA-256: 690b15cbfc447d01e74e405dcaa1dfbadb33cea89d12b74471bbdcc9a2397c12
font_01_sfnt_off00007e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E12 4676 bytes
SHA-256: 809247cd668471a2ba365251294489f6dc34153845ab07ed50030f097b3c260f
font_02_sfnt_off00008e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E16 12640 bytes
SHA-256: d6839c90391df8514105e7c180288fc69c9501636c2a2fad61c370bc57e5d36a

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