Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c285d36d4002184…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 06:39:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41e961abade99ed1888f1fac07f0fbe5 SHA-1: 497e3d77472f61ae036e67be35911e1595e5c91e SHA-256: 1c285d36d4002184ced9f0023359b7a83a47f6f6f820bd3fe8733e8eaf919e48
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a significant number of which point to a link farm hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=google+sheets+conditional+formatting+between+two+dates, is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious redirection attempt.

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=google+sheets+conditional+formatting+between+two+dates In PDF document text
    • http://files.firstexecutivelimo.com/uploads/1/3/0/7/130739544/4254583.pdfIn PDF document text
    • http://zabijop.ldbellsoccer.com/uploads/1/3/0/7/130776394/risikewozawi.pdfIn PDF document text
    • http://xowidaxi.colearninglab.org/uploads/1/3/1/3/131378816/2642016.pdfIn PDF document text
    • http://pimag.popcob.org/uploads/1/3/1/1/131164250/9238655.pdfIn PDF document text
    • http://files.texaswolverineallstars.com/uploads/1/3/1/8/131871614/wipesazoto.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/1/0429/8244/1113/files/98091236380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/aristotle_rhetoric_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8757/6740/files/33099346513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8279/2606/files/tamepejimidafebor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/a_noite_dos_mortos_vivos_livro_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1252/9055/files/jokademem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1748/7011/files/mount_allison_university_excel_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/25219385634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9815/9769/files/66103873079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/royal_ceramics_lanka_plc_annual_report_2013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9535/9642/files/duskhaven_top_hat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/contemporary_abstract_algebra.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_off0000619d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619D 5700 bytes
SHA-256: da20556aaaf8d6695364f5404d2ec3f1470edbee296e94834146480b4fb47780
font_01_sfnt_off000074e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E9 10260 bytes
SHA-256: aacbf5b8e9fd55c9d7c4893b9f120fa33d5625bf6098daeee4d541198dc6cb85