Malicious PDF — malware analysis report

Static analysis result for SHA-256 b820f49b47dbcac1…

MALICIOUS

PDF

35.9 KB Created: 2020-08-20 23:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e83da3018ec9bd5d6ea90e75765bbfbd SHA-1: f88fae3149157dc4fe48b7c33d65e70372a5f6b7 SHA-256: b820f49b47dbcac1fed09ea6ac2c09ec8fbf8453ab50dc72f66669115876b1af
194 Risk Score

Malware Insights

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

The PDF file contains a deceptive title suggesting a report on phone extortion, likely intended to trick the user into clicking the embedded link. The link points to a known malicious redirector, which then leads to a PDF file hosted on Shopify. This indicates a phishing or social engineering attack aimed at directing users to malicious content. The ML classifier 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=reporte+extorsiones+telefonicas In PDF document text
    • http://files.petcremationcare.ca/uploads/1/3/1/4/131453543/f52567e8e3.pdfIn PDF document text
    • http://files.thelemondropshoppe.ca/uploads/1/3/2/7/132712003/83d73edbc5de6fd.pdfIn PDF document text
    • http://jiviv.virginiarailroadassociation.com/uploads/1/3/1/3/131380042/6011221.pdfIn PDF document text
    • http://files.shutterlifeprojects.com/uploads/1/3/1/8/131871852/2f1beb217af2422.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/1/0437/8011/2545/files/repovepuruzibaduwaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8879/6065/files/33181865152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1094/9273/files/kopeledumulepodabatajafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2848/0154/files/dewagipojobido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/integrated_chinese_traditional_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/24584354176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8581/5205/files/89889526278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0524/6631/files/34255109977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/78136473354.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_off00004ad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD9 5084 bytes
SHA-256: 6ede17722a1db6b3d7817d115bde5c5ab7471e2bfe20c9455ac148361b1f95b3
font_01_sfnt_off00005c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C43 11344 bytes
SHA-256: f74abc6e418686c8b5c8653fc9bd1b23acdb20c22061ba9e3f578dc48d2da20d

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