Malicious PDF — malware analysis report

Static analysis result for SHA-256 70805f02be3b7eb4…

MALICIOUS

PDF

42.6 KB Created: 2020-07-28 20:11:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00527942d21ffd50aebcc4999533c48b SHA-1: e9607101996438966619a1e538288e0fc42698f5 SHA-256: 70805f02be3b7eb43b21373c9ca9b4046c8e70d53fc09a855e85ded40745a27d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to an SEO redirector, which in turn points to malicious infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'free coloring shapes worksheets'. The presence of multiple PDF links and a critical redirector link firing indicates a campaign to drive traffic to malicious sites, likely for phishing or malware distribution.

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=free+coloring+shapes+worksheets In PDF document text
    • http://files.ramblinghomestead.com/uploads/1/3/0/8/130874496/bc1666.pdfIn PDF document text
    • http://files.thisiswitchdoctor.com/uploads/1/3/1/8/131856012/2ff0ce4b3707bf.pdfIn PDF document text
    • http://files.preacherrhetorica.com/uploads/1/3/1/3/131398036/7840310.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/1/0431/8858/4605/files/suwurugizozegosaxanipis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4454/files/wojumutetuxogogajinopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1090/8572/files/besud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4225/9612/files/62979459448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6582/files/14049409349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/91613186910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4582/1338/files/79503922241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/nijemukivorudekefakif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/matifudaserabuvalilojel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/luxanufanuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/30783812262.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 6

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_off00006a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1F 5096 bytes
SHA-256: d57b67accd1ee0ef7d2d2f3dcd2738b86079e276ada4785298028874ca47cf8c
font_01_sfnt_off00007b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B76 9788 bytes
SHA-256: 1303badb70ed9aa04f21894c9d3cd5e44460897b875b214b49b8f9cc54b2e22d

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