Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b30ea6ff1b0a8d6…

MALICIOUS

PDF

41.4 KB Created: 2020-08-25 12:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc346a7d12473744197961d0eef21c27 SHA-1: e9937dfc08537a337016b3499ff900f16e4ab49f SHA-256: 4b30ea6ff1b0a8d6285ce9d7bcde87346795684b32b085b695dbaf325b3b448b
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text fragments and URLs that suggest a lure, possibly related to invoices or payments. The primary malicious URL is https://ttraff.cc/pify?keyword=chartboost+android+cos%2527+%25C3%25A8, which is designed to redirect users to further malicious content. The presence of numerous PDF links, many hosted on Shopify, indicates an attempt to create a link farm for SEO poisoning or to distribute malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=chartboost+android+cos%2527+%25C3%25A8 In PDF document text
    • http://files.bridgepsychology.org/uploads/1/3/0/7/130776393/vufijop.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/1/0429/5009/9107/files/26855020648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8768/1952/files/biblia_de_estudio_arco_iris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/12126917943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/nuwelaberenix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/74156064234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9300/7272/files/jopariguk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7581/9927/files/payment_receipt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5253/8787/files/lavender_essential_oil_uses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9540/7269/files/bwv_974_adagio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/chromatography_of_spinach_lab_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/44469558878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/larex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/role_of_chairperson_in_a_meeting.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 1

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_off00006213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6213 5216 bytes
SHA-256: 69990b735e82e3e761366956807396ec607c7f49a667f79a31ff0f971f3277f7
font_01_sfnt_off00007383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7383 10476 bytes
SHA-256: 38de183771c5dc37d0aa9d6de01e672c318b4aa615f802fbef6476318b09fc07

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