Malicious PDF — malware analysis report

Static analysis result for SHA-256 e821840a0cce6a70…

MALICIOUS

PDF

43.6 KB Created: 2020-08-07 09:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6fea070736c5545a3eb60e127a1841da SHA-1: b5e56d6b61a69a80683e1e517cf05985d5ba2b0d SHA-256: e821840a0cce6a7015b02e303cd78366095a7d3cd2e02d3bb02da727fa158015
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=appareillage+electrique+domestique+pdf'. This suggests the document is designed to redirect users to malicious content, likely a phishing page or malware download. The document body, though heavily obfuscated, contains the same URL and references to electrical equipment, reinforcing the lure. No scripts were extracted, limiting the analysis of specific execution techniques.

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=appareillage+electrique+domestique+pdf In PDF document text
    • http://files.canoetorontoisland.com/uploads/1/3/1/4/131438509/8907185.pdfIn PDF document text
    • http://files.giaddiecreations.com/uploads/1/3/2/7/132740637/798466dd55e.pdfIn PDF document text
    • http://files.paindownthere.com/uploads/1/3/2/8/132814972/wapuvagofuzajus_golefikanofiwa_zelibepeve.pdfIn PDF document text
    • http://files.nightheronfarm.com/uploads/1/3/0/7/130739509/6716883.pdfIn PDF document text
    • http://files.nearyouraltar.com/uploads/1/3/2/7/132741385/bubopimu.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/1/0435/2750/4024/files/28289708240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5595/9464/files/electric_socket_light_switch_heights.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3395/9327/files/accuracy_and_precision_in_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/kazumove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/17174286343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6670/1477/files/fawezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/37650723678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/astm_b_117_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0822/0574/files/40410453709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8762/4344/files/55680332528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/gipomunugar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2435/8298/files/75761797577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96280370261.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000659d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659D 5588 bytes
SHA-256: f6b9cc2b68835cd5266138e8147be8f06d5915c9691a0e8906ab423ef66d71da
font_01_sfnt_off00007880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7880 12508 bytes
SHA-256: 43e1ac4b5dd501702c5a6f3333e846a1709ade73f23949891bbea86a13545ea0