Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c27153b45815d75…

MALICIOUS

PDF

43.1 KB Created: 2020-08-22 20:18:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2b12d9a1a9289ca20582c55b9391cce SHA-1: 3efd8d8142de0bc08057a021da1d65a6f416e148 SHA-256: 4c27153b45815d754cd499ecf61e5a5a104bb6ca89b25a79e455e5d4fe0cdfe7
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The primary malicious URL, https://ttraff.cc/pify?keyword=climb+every+mountain+sheet+music+free, is designed to lead users to harmful content. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure. The presence of a large number of external links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute the malicious payload.

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.cc/pify?keyword=climb+every+mountain+sheet+music+free In PDF document text
    • http://files.nessflett.com/uploads/1/3/1/0/131070911/xuwakuwo-fajibuleti-zititefofabo.pdfIn PDF document text
    • http://xikimopo.hoopconvention.at/uploads/1/3/1/4/131454269/7253e1b.pdfIn PDF document text
    • http://badodojox.sigamiga.com/uploads/1/3/2/6/132681237/9731975.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/1/0433/9394/1671/files/akuntansi_syariah_jurnal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/vixabelolimatexasod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5562/0006/files/ansible_cloudformation_facts_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/somunowevowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/adding_and_subtracting_decimals_grade_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/68226105428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2113/1161/files/37902325076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77439678162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/comprehension_worksheets_for_class_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8095/7593/files/jasetemimojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/92955230504.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_off00006b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B46 5328 bytes
SHA-256: 9fcd3b94b543712eff0357407bcccd67127bd784bdcacf90f0a4a1f6781564f1
font_01_sfnt_off00007d40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D40 9980 bytes
SHA-256: de1e39678c817c84bec169b5e2d840c3d12f856d7c79cf9e2d5a69a6be93e35c

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