Malicious PDF — malware analysis report

Static analysis result for SHA-256 f163b830fc061cc8…

MALICIOUS

PDF

64.1 KB Created: 2020-08-02 04:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0d8f8b215eda2ea0a8b8e048c83bb68 SHA-1: 7c9c5aa617e22ae25913d80cc068564fa577b6e4 SHA-256: f163b830fc061cc8bc8d6a54aa99a47c6380a97500e1dea4e384cf8f688103e5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=realistic+water+two+sse'. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated but contains the redirector URL, reinforcing the malicious intent.

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.cc/pify?keyword=realistic+water+two+sse In PDF document text
    • http://files.yourspeechroom.com/uploads/1/3/1/4/131454109/junapebe.pdfIn PDF document text
    • http://files.nefcy.com/uploads/1/3/0/8/130814205/66979dccfc.pdfIn PDF document text
    • http://files.montgeleverbier.com/uploads/1/3/0/8/130873708/fifebabifuw-fikixemo.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/1/0432/7096/3350/files/lenineviledos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/82082131457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/5310901379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/66584095228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8547/7541/files/mekolugotefawevidifimono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0027/2792/files/78118261675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1685/files/silonudazugesiduzimow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/tisuwuvuvilezijodowiwapaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/differential_equations_4th_edition_blanchard_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB93D 4892 bytes
SHA-256: 6ef319775062a595b612690d40b7b525dbf0ac576c8042f1cdeda9a785868b91
font_01_sfnt_off0000ca06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA06 12740 bytes
SHA-256: 5b77f6918972f2f1807ff0814bab2d6da5a5d2e84102f53948546383b408186e

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