Malicious PDF — malware analysis report

Static analysis result for SHA-256 39dea43ad3ff3491…

MALICIOUS

PDF

47.9 KB Created: 2020-08-05 03:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67c8906f793656e5b3339bb425a19153 SHA-1: 38df6e4cd56470ed985bb870d5caecc98d05eab2 SHA-256: 39dea43ad3ff34915b040cd9de2e81b173ff6a5bc5fcbad3834e98c07a696f26
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one pointing to a known malicious redirector at 'ttraff.com'. The document body and embedded links appear to be SEO spam, likely intended to lure users to malicious sites. The presence of a malicious redirector suggests the intent is to deliver a secondary payload or phish for credentials.

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.com/pify?keyword=nissan+almera+classic+2020+%25D1%2580%25D1%2583%25D0%25BA%25D0%25BE%25D0%25B2%25D0%25BE%25D0%25B4%25D1%2581%25D1%2582%25D0%25B2%25D0%25BE+%25D0%25BF%25D0%25BE+%25D1%258D%25D0%25BA%25D1%2581%25D0%25BF%25D0%25BB%25D1%2583%25D0%25B0%25D1%2582%25D0%25B0%25D1%2586%25D0%25B8%25D0%25B8+pdf In PDF document text
    • http://files.twosevenbaseballcamps.com/uploads/1/3/1/8/131857270/movuzatodof_jukelakol.pdfIn PDF document text
    • http://files.vacationsbycarla.com/uploads/1/3/1/6/131637953/xopolefi.pdfIn PDF document text
    • http://pavila.flbutterflyeffectboutique.com/uploads/1/3/1/6/131606490/rizediguri.pdfIn PDF document text
    • http://files.victoriajsmith.com/uploads/1/3/0/8/130874231/8233174.pdfIn PDF document text
    • http://files.stylish-mommy.com/uploads/1/3/1/4/131483201/9693846.pdfIn PDF document text
    • https://ttraff.com/pify?keyword=nissan+almera+classic+2020+%25D1%2580%25D1%2583%25D0%25BA%25D0%25BE%25D0%25B2%25D0%25BE%25D0%25B4%25D1%2581%25D1%2582%25D0%25B2%25D0%25BE+%25D0%25BF%25D0%25BE+%25D1%258D%25D0%25BA%25D1%2581%25D0%25BF%25D0%25BB%25D1%2583%25D0%25B0%25D1%2582%25D0%25B0%25D1%2586%25D0%25BIn 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/1/0433/3296/0409/files/namonetajuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/zakanivexoxeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/98195917394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/oxford_chemistry_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/guzolozifowiliju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7085/7122/files/ranks_in_rocket_league.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/stnose_carotidienne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/netisimulovilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/15993633899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4443/7142/files/34136249704.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F9 6984 bytes
SHA-256: ae9ab312f81e50d0dc4595e84ca6190fe9000bf34512d57ae9f6728e218c3875
font_01_sfnt_off00007d2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2D 16072 bytes
SHA-256: 16e9311655c2fe36b91ddb0c9f467f9c74e5238822e7e5b04d5886cc448e554b