Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c93562bc4394b5…

MALICIOUS

PDF

43.8 KB Created: 2020-07-25 13:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a0331542e03a236d7f0161dae86487b SHA-1: 6cc11c83bed66e5e5ac95b5a5afb62722a61ab08 SHA-256: c9c93562bc4394b5e32c1f0026a1838c528d594b076287ed8bca08b072be68d1
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=dls+19+hack+android+1', is flagged as malicious, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains metadata related to 'wkhtmltopdf' and a date, but the primary malicious activity is driven by the embedded URLs.

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=dls+19+hack+android+1 In PDF document text
    • http://files.bonafidefiction.com/uploads/1/3/2/6/132682899/wopupamigusegu.pdfIn PDF document text
    • http://files.1drop2creativeart.com/uploads/1/3/1/8/131856331/newiwifileriv-pamuderavobamur.pdfIn PDF document text
    • http://files.ssipdx.org/uploads/1/3/1/3/131383486/95297b174d95.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/1/0434/4525/6344/files/60839915151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/18241311399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/90776133729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/10056986340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8956/6623/files/28085917191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1901/0201/files/zoxulafudotanofadubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/lapodasaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/dabep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/63318730106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4273/3221/files/91777648393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/89043073736.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_off00006e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3D 4888 bytes
SHA-256: 9ce54b01fe56275b2c6de8e818558e9407df2f7c5c1dbe0f698d6bc96ce14f9a
font_01_sfnt_off00007eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAF 10448 bytes
SHA-256: 0095ff6a7ec76f4847efa07af3b55514cd828f1ace37109d025c74571da4287f

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