Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa82b375a19e141b…

MALICIOUS

PDF

43.9 KB Created: 2020-08-07 16:02:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07215c17a66182f8ef09f83ac0b0f252 SHA-1: e35963f9a4cdbe7f8ca99ccfcdc43e40f0a85254 SHA-256: aa82b375a19e141b45bedf545250b5c50e9751f3cfe68f1c7ed97459be55f045
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body text and embedded URLs suggest a social engineering lure related to email attachments, specifically 'PDF attachment in mailchimp'. The presence of a large number of external PDF links (PDF_SEO_LINK_FARM) further supports a malicious intent to distribute content or redirect users. The primary IOC is the malicious redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pdf+attachment+in+mailchimp In PDF document text
    • http://gipoli.geoed1.com/uploads/1/3/0/7/130776757/suvuzaju.pdfIn PDF document text
    • http://files.gerhardsnewsblog.com/uploads/1/3/1/4/131454049/wologop_wazixebonamunon_lesaxategep_zogot.pdfIn PDF document text
    • http://files.whiteterns.org/uploads/1/3/1/1/131164152/181531.pdfIn PDF document text
    • http://files.mgdinglegbhughescollection.com/uploads/1/3/2/6/132696030/9eeab5d87b.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/1/0433/6844/8152/files/kidudukafofadimoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/jamaica_inn_daphne_du_maurier.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/22956356404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1361/1413/files/convert_to_monochrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4788/4699/files/57357390748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/libro_auditoria_administrativa_benjamin_franklin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/kivefimuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/lekakixizunewobodixezen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1347/1384/files/tovikolasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9652/files/32518735011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/15151625814.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 7

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_off000068fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FB 5124 bytes
SHA-256: 850811adc4d3299c78d2187c2d9819bafca29b3db684a20e74e4ae25403aee87
font_01_sfnt_off00007a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4D 12508 bytes
SHA-256: e9c965315fdc499fba937b0cec9077d8ed0a76a84499dcdf5992496520031de8

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