Malicious PDF — malware analysis report

Static analysis result for SHA-256 de16430ec644124d…

MALICIOUS

PDF

46.8 KB Created: 2020-08-05 03:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b6d3b629f9484d8fa02601e8a8d968c SHA-1: ad956f663530da1e53f0a04413adfe87320bdfb1 SHA-256: de16430ec644124d1d63e529496d7e101fbc67266f9af9924e533a351938bf21
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a malicious redirector at 'ttraff.cc'. The document body text, though partially obfuscated, includes the same search term found in the malicious URL, suggesting a lure for users searching for 'Namorado de aluguel pdf download'. The primary intent appears to be redirecting the user to malicious infrastructure via the 'ttraff.cc' URL.

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=namorado+de+aluguel+pdf+download In PDF document text
    • http://files.duncanjefferson.com/uploads/1/3/1/0/131070452/3119277.pdfIn PDF document text
    • http://domefob.dakotarosefloral.org/uploads/1/3/0/8/130874222/cc35185aba0.pdfIn PDF document text
    • http://files.rjmasters.com/uploads/1/3/1/3/131398406/pilutavogaxi.pdfIn PDF document text
    • http://fijar.marthas-kitchen.org/uploads/1/3/2/6/132683014/7981389.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/1/0435/3766/2103/files/informe_cndh_caso_ayotzinapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2317/8656/files/46828160893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/demavegezusojufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7065/1542/files/47085924688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8520/9506/files/metubodakited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1459/4466/files/jexonafejumozakumiviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0752/5542/files/22153381261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/43019774577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/98974257532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0094/7103/files/kugikunekovi.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 6

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_off00007834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7834 5244 bytes
SHA-256: 855cfdf8788677127c2cad6c7189c0e5aef923aa02a544ec45c128a4535ea000
font_01_sfnt_off00008a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0B 10688 bytes
SHA-256: b06909f1c299c2708f5276355d5f95ca117ea6b487b87e7f5c7fb330cb93bb55

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