Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ecb26819341501…

MALICIOUS

PDF

63.3 KB Created: 2020-08-03 12:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5094fe7666cd07fca5639c6dd6b901e5 SHA-1: 0192972326cf986eadc328dd4ab9d13155632a54 SHA-256: a4ecb26819341501abfb9184db206f2da2d7c3c078b5e8927b984051e11cf463
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=candomble+bem+explicado+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious redirection scheme.

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=candomble+bem+explicado+pdf In PDF document text
    • http://files.thevictorianpetal.com/uploads/1/3/0/8/130873804/e611ab54455843.pdfIn PDF document text
    • http://files.charleslpearson.net/uploads/1/3/1/8/131871501/1553476.pdfIn PDF document text
    • http://files.supernovaexotics.com/uploads/1/3/1/6/131607010/savajejamotowujagebi.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/1/0432/3901/4562/files/black_and_decker_18v_weed_eater.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3382/1347/files/bowanugoturagutiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/lorafekosuxep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/dasemeduvazuretinujexapuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/wiriderafuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/cz_75_armorers_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/27179426571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30547733638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/58126769476.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_off0000bb34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB34 5140 bytes
SHA-256: dbf526914a1f708597283a8de7d95ef70efbf7f3a2e24ddd3592ca810e6afb6a
font_01_sfnt_off0000cca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA3 10420 bytes
SHA-256: cd232ed4ae60d64210461a1eb463477f990ca7698dc53ef572a01f4d18635785

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