Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19082da27b60677…

MALICIOUS

PDF

41.1 KB Created: 2020-08-23 00:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ba3ca6d65c551e7e0afcab920c7df40 SHA-1: c8c4e925c6d5e7d3bffedafacec1f867b7c2aa92 SHA-256: c19082da27b60677455e12ed4c6824ca6a374afb1ed57f96f6b3522363b38a66
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the string 'Chrome free application' and the malicious URL, suggesting a lure to download potentially unwanted or malicious software. The presence of numerous external PDF links points to a link farm strategy to distribute malicious 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.cc/pify?keyword=chrome+free++application In PDF document text
    • http://files.judithlhannalcsw.com/uploads/1/3/1/8/131856919/kinenipoti.pdfIn PDF document text
    • http://files.parkingguidance.com.au/uploads/1/3/1/4/131453682/laxanuwimesawok.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/1/0432/7692/7134/files/705341030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0131/5491/files/25426926310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/denajakigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/64116527336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7940/1623/files/calculus_5th_edition_james_stewart_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7086/4025/files/3631772494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/o_umlaut_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9483/6127/files/tosakevoxum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/jozupipewixewifewutuwid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/nikajuwopapuvefeni.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_off00006462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6462 4980 bytes
SHA-256: 6f93e4b08f2e941528bf1cf3030ada944038757b761ca85fac1756b415d6b243
font_01_sfnt_off0000752e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 10076 bytes
SHA-256: 5fc7cfa3fba41b1dcf31d7f5c056b5b62cdcce37fdb4e3711ca391c90e2d3f81

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