Malicious PDF — malware analysis report

Static analysis result for SHA-256 a49b1376689f3741…

MALICIOUS

PDF

42.3 KB Created: 2020-08-06 22:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba87e6fa97763554e54cae98b625ef6d SHA-1: 8374cf977b7a7d0a9644a88605eb703ed98733b4 SHA-256: a49b1376689f37418bdab2968471ed969f0e6f4747b7b1777e043aeb55e57d9d
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com) and a link farm hosted on Shopify. This suggests a phishing or malicious redirection attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, but the presence of numerous malicious links is a strong indicator of 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.com/pify?keyword=tous+les+analyses+du+sang+pdf In PDF document text
    • http://files.smallenginerepairgalvestoncounty-santafe.com/uploads/1/3/2/6/132682976/xefolu.pdfIn PDF document text
    • http://files.whitestole.com/uploads/1/3/2/6/132683292/tufurodabu_ruwaw_vavavubowepi_fexibafom.pdfIn PDF document text
    • http://files.saintbrendans-online.com/uploads/1/3/1/4/131454286/xurixitiwo-morasidurexibo-dubedi.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/1/0428/6991/5814/files/vefoxiwokeron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/carnatic_violin_notes_for_malayalam_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7397/9043/files/shielded_metal_arc_welding_nptel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1744/4264/files/rugolipegun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/ramulakuxoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/55358976583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/kaxuwutusage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5606/2876/files/63983335946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8903/files/15729531414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0489/8978/files/annotating_on_surface_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0365/5830/files/current_affairs_january_2020_affairs_cloud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8748/6358/files/jisoguvasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/pijivefobenevu.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 5

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_off000062fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FB 5164 bytes
SHA-256: cf6fc845b27522394f5c87551c7492742504cb94e6821f935e4d7af188a37ac9
font_01_sfnt_off000074b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B2 12092 bytes
SHA-256: f4249d1b60e13970d4d1cad04335ce424eeffea1fb23785301061e45a9a6b750

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