Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6997cfeac00af12…

MALICIOUS

PDF

42.2 KB Created: 2020-08-23 14:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4139208b2d378f860366950d93a2580 SHA-1: 13dbe5c1c1a6523276166d958ae68bbbfc11f454 SHA-256: e6997cfeac00af125de5c68dec701945f7fcd5f8fd453940b22ee6b7291c3d55
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body mentions 'Whatsapp app 2019 free', suggesting a lure to trick users into clicking the malicious URL. The presence of a malicious redirector link and the SEO link farm technique indicate a phishing or social engineering attack.

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=whatsapp+app+2019+free In PDF document text
    • http://files.creesbrothersfarm.com/uploads/1/3/1/4/131408056/4506d0e66ac1.pdfIn PDF document text
    • http://wuzax.westerndubuquefootball.com/uploads/1/3/1/3/131384771/49949.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6975/0940/files/very_hungry_caterpillar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/makalah_cacing_kremi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/buzobonasamilesenuwufox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7357/6865/files/react_dashboard_templates_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/cells_alive_webquest_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5654/4409/files/sdl2_raspberry_pi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/26098323147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9639/2348/files/javascript_sum_array.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/panewifode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5285/9543/files/dobuwe.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D5 4976 bytes
SHA-256: 0ed1a29d3654745e3fb770cad23410cb6b4286b697137187c023ffb43f46a1cb
font_01_sfnt_off000069d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69D7 10608 bytes
SHA-256: afdc536b2c4a1be08452c7f51542a0153e7b66e2e1212cb69843750c85c4e1f4
font_02_sfnt_off00008e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E31 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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