Malicious PDF — malware analysis report

Static analysis result for SHA-256 15dfb7fe977a2a0d…

MALICIOUS

PDF

72.4 KB Created: 2020-08-07 07:39:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87f427a21e35c8165eafd7d410b524fa SHA-1: 96121662761f5464ea5640245f829f748144ee7b SHA-256: 15dfb7fe977a2a0dca7a62a58db140dcc09eb8a88e84f255c9b2697d37d305b4
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on SEO link farms and redirect to malicious infrastructure. The primary redirector URL is identified as malicious, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the malicious URL, 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.ru/pify?keyword=advance+care+directive+pdf In PDF document text
    • http://files.stevecanderson.com/uploads/1/3/1/3/131379183/tusemi.pdfIn PDF document text
    • http://files.valleyrootsfoodhub.com/uploads/1/3/0/7/130740344/fa8b50ce.pdfIn PDF document text
    • http://files.handmadebylouisa.com/uploads/1/3/0/7/130775827/25f7f89e987e0.pdfIn PDF document text
    • http://files.omnipacking.net/uploads/1/3/1/3/131398100/telujuxemaxetide.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/1/0430/2569/4883/files/92216788528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1959/2102/files/lamusegosodisuginemow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/tuvukozezovurulemuluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8365/3527/files/60873199508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/43033273667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3299/2161/files/judoted.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/13934291608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/51968624614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5657/7182/files/tapitegor.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE0 4988 bytes
SHA-256: 9324224ea52d3fb674b68701267d2f2cfe224ef317185ab31bfe03c036e8d382
font_01_sfnt_off0000f0f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F1 10528 bytes
SHA-256: cc1d8d1bbba827317f7f5dd6af5faaa9d819bd6a938f1eeece2486912cdf63dd

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