Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a091adf78aac818…

MALICIOUS

PDF

48.1 KB Created: 2020-08-17 18:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6c98fd1bcb0472cbe443ed332dbfcac SHA-1: b851f9fc50011ed9fb4449ca2de8d8fb9b5d80a5 SHA-256: 2a091adf78aac81851ed78822e29792bed8c0383e34144714deddeea60efc52d
194 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though partially corrupted, includes the same malicious URL and a benign-looking title related to Brazilian tax tables, suggesting a lure. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

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=tabela+anexo+iii+simples+nacional+2018+pdf In PDF document text
    • http://files.goincoastaljeepclub.com/uploads/1/3/1/4/131483719/4367463.pdfIn PDF document text
    • http://files.totalresetweightloss.com/uploads/1/3/1/3/131384281/7836617.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/1/0431/8255/5297/files/vmware_vcloud_director_training_videos_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3279/files/xanewizavinirisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/pitutijakekug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/36745597189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/butterfly_kisses_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/53320033759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/leboxukupafegitun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/57332497741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4007/7974/files/ascii_code_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/22083319651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/39171549286.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 2

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_off00006b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4D 5884 bytes
SHA-256: c0ec8eabc6f097b88044189a4694d182d35d7e7e02cc3e5f14c2baad975e3966
font_01_sfnt_off00007f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F45 17376 bytes
SHA-256: 5bb783489780a7828d31bfa6a8fe7b86691ea8f39824c0e7515ff46e37b9eb64

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