Malicious PDF — malware analysis report

Static analysis result for SHA-256 885c27ef305c04b0…

MALICIOUS

PDF

42.7 KB Created: 2020-08-07 05:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b10858c75b59ae28a759acd79aec1982 SHA-1: a1d47baef7f368a11d45a69ca7da6322dabb9b9f SHA-256: 885c27ef305c04b03b76f44513b0afcfdcdc02f98ce9b6b86f289a2062266ab6
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including a primary redirector to `https://ttraff.com/pify?keyword=punctuation+rules+uk+pdf`, which is flagged as malicious. The document body, though heavily obfuscated, contains this URL and other links to PDF files hosted on Shopify and other domains, suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness, supporting the attack pattern of luring users to malicious infrastructure.

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=punctuation+rules+uk+pdf In PDF document text
    • http://files.gregoryscommercialcleaning.net/uploads/1/3/2/8/132813998/21026d7e41c62.pdfIn PDF document text
    • http://files.mariemanski.com/uploads/1/3/1/6/131606271/4ff3cf.pdfIn PDF document text
    • http://files.neverleaveonebehind.org/uploads/1/3/1/4/131454586/pefikisafurevajizip.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/1/0435/5024/5028/files/fabonem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/46129424258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/gigozapex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/96582067939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9856/1957/files/factors_influencing_academic_performance_of_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/46233050647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6990/6844/files/serulepewet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7792/7063/files/23693338100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/8603224946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/convert_in_to_word_document_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/jugevunuzigudamexamekil.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 3

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_off00006aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAF 5212 bytes
SHA-256: 37d1178e3429f8022dfe7599f98ff44db363868d0f3946ba87df718ee96dba69
font_01_sfnt_off00007c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C77 9900 bytes
SHA-256: 996f8a0e1e9efb971325b1495cb2c41a8d19492e1f2960795080cf6741861514

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