Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a4ad6d6e21bc4d…

MALICIOUS

PDF

74.0 KB Created: 2020-08-05 05:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c4ab94b9f66f2908bc9f9173a1f0c43 SHA-1: 6ae446ae88c5f05c30e46439f58bbdf4d23a2765 SHA-256: c2a4ad6d6e21bc4d9412fdda78f9fe498770107c3c99f61d46dc22d543944143
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is also flagged by the heuristic. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. The presence of a large number of links to external PDFs, many hosted on shopify.com, indicates a link farm or SEO poisoning tactic to disguise the malicious redirect.

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.ru/pify?keyword=complex+sql+queries+with+examples+pdf In PDF document text
    • http://files.plantwisdomgardencenter.com/uploads/1/3/2/3/132303406/ratorumatulag.pdfIn PDF document text
    • http://files.clwindowwashing.com/uploads/1/3/0/8/130873717/gevorisutile-wamip-puduzoj.pdfIn PDF document text
    • http://files.aattribut.com/uploads/1/3/2/6/132680908/2001955.pdfIn PDF document text
    • http://files.wingettweddings.com/uploads/1/3/1/1/131164488/129068.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/1/0432/8721/6293/files/goldstein_classical_mechanics_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6802/3194/files/jetekonuwavixutaronem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6716/2276/files/36124691889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/dagixejakaripigajena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/genapujoxuzelemudid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/85527211136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6843/1265/files/35999454318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4382/3511/files/bezufidomutovilemeseveguw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3786/7680/files/62830445984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0056/8736/files/gelogepazawumukoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/8848198784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/9774571865.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_off0000d5fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FA 5472 bytes
SHA-256: 2014dcf4738867dfe28ad642d90a34970a32859416e55e4ecf674e362efc3b24
font_01_sfnt_off0000e87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87A 16040 bytes
SHA-256: 8598bf17c4ab9f690311eb7be4832cbf8ce6b520590fdea3bd5be50199303ded

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