Malicious PDF — malware analysis report

Static analysis result for SHA-256 156d6320cd601996…

MALICIOUS

PDF

33.5 KB Created: 2020-08-01 23:16:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfeb91a9fb405de9f784b090825ffeae SHA-1: f8fc640fe5ed2d293a1f5d9dba7a6e4a4aeab1e1 SHA-256: 156d6320cd601996312e67ee58cf3cf3f2acc12711552b184460a73a47fd54af
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector and a link farm. The primary redirector URL, 'https://ttraff.com/pify?keyword=wow+classic+turtle+scale', is a strong indicator of malicious intent, likely leading to phishing or malware distribution. 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=wow+classic+turtle+scale In PDF document text
    • http://files.sweetpeafloralcreations.com/uploads/1/3/0/7/130739120/7664411.pdfIn PDF document text
    • http://files.ellendonaldson.com/uploads/1/3/0/7/130775001/a43045bc.pdfIn PDF document text
    • http://files.andreafarmeraprnllc.com/uploads/1/3/0/7/130776536/25f93e2f2e.pdfIn PDF document text
    • http://files.heislercommunications.com/uploads/1/3/0/8/130815014/tutal-tupivalaw-guriwilegonija-tamidubod.pdfIn PDF document text
    • http://files.northernmichiganlivestock.com/uploads/1/3/0/7/130738836/kawafewafijura-xokadeser-zewufajaremol.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/1/0440/7659/7400/files/66427750501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/73074884094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/1233174033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3724/5085/files/saxivubezirorixusobet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/xojutubazudiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/29887925408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9131/0232/files/rubinuguwatopame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1568204463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5135/1200/files/parita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6525/files/sklearn_logistic_regression.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1751/7725/files/jozem.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 8

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_off00004743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4743 4900 bytes
SHA-256: 83bb11cb9e849f13d271c3d91dd1e80046ba36c664fb3b04c397a412c1e80e1a
font_01_sfnt_off00005810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5810 9804 bytes
SHA-256: af2ba27f8ebf3fbd5446e2f6aa352b5248165ddeb18d7b77ce6d44a39c542f6d

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