Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a5e1b5ae792b6e6…

MALICIOUS

PDF

43.2 KB Created: 2020-08-07 06:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e178f9e9ab15151fd128ceb066f9fdd7 SHA-1: 33e31f48328e71d202d83df9fdb38d33c6189b0a SHA-256: 1a5e1b5ae792b6e610f38fdb313bbd6165d545b9c2b970df5063bcef32c79247
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links, including a critical redirector link to 'ttraff.com', indicating a phishing or malicious redirection attempt. The document body, though malformed, suggests a lure related to 'formulas and functions in ms excel pdf'. The presence of a link farm and the ML classifier's high confidence further support the malicious nature of this document.

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=formulas+and+functions+in+ms+excel+pdf In PDF document text
    • http://files.dianasofiaestrada.com/uploads/1/3/1/3/131379382/jololexorase.pdfIn PDF document text
    • http://files.stephenlemons76.com/uploads/1/3/0/9/130969305/vazomobaxutovoraz.pdfIn PDF document text
    • http://files.radonchamber.com/uploads/1/3/1/4/131406841/9079892.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/1/0433/9315/5237/files/vigeravulikizavinejevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9951/2231/files/sunovavulidukoxopirowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/design_and_analysis_of_sorting_algorithms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/55333187208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/51127630361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fimovubonivunab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4760/8730/files/70179147000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/47790507768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/kozewuzogovujal.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_off000068c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C9 5324 bytes
SHA-256: dc80f6fc575f47f200674e092edfe40fd0fda0a44449d43bed14ba55cf065949
font_01_sfnt_off00007ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD4 10784 bytes
SHA-256: 54d5f4c8ef6f59afea3f35b1bfd1fe57967f8beabfac9eeaeed1bdb32eae194a

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