Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db7534dcf5f6d1…

MALICIOUS

PDF

49.0 KB Created: 2020-08-05 04:30:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76da6bb7e81d8fe13dc9a699c7510489 SHA-1: 31a62fed826af1177bbf05355fb49f4f2f16fc1b SHA-256: c5db7534dcf5f6d1ba234a3db4fe27b2310d64fff2eb91ab2abcb27069466187
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL is https://ttraff.cc/pify?keyword=que+es+el+sistema+capitalista+pdf. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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=que+es+el+sistema+capitalista+pdf In PDF document text
    • http://files.annieontheemeraldcoast.com/uploads/1/3/2/3/132303075/rotojitusodi.pdfIn PDF document text
    • http://files.sonsofitalycgc.org/uploads/1/3/1/0/131070751/lejos.pdfIn PDF document text
    • http://files.abfcreativedesigns.com/uploads/1/3/1/6/131607029/tetudelikotegus.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/1/0428/5346/6271/files/brooklyn_heights_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/17653882154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7428/0855/files/10781986348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3505/files/vaxemigugelujejop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2105/7700/files/55689363158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/zepisenam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/fonijorow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7706/6145/files/crompton_ceiling_fan_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5282/5750/files/37173000680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97285982277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2731/5353/files/84504013272.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_off00007f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4A 5268 bytes
SHA-256: f15989af696f29fdc5256c4cbd50229fa260b38e22e11e35c6479bb9c0342f98
font_01_sfnt_off00009123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9123 11224 bytes
SHA-256: c111e0e828a1d97284ff0f32bc20f24c6665227981799b6dd85bbaaf32bfec33

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