Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c4d0da1d89b0b81…

MALICIOUS

PDF

76.6 KB Created: 2020-08-10 16:40:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dae3fd4954cea8fe415d3eda03c5793d SHA-1: 6d22cfd33a3ce9e512210e5bfdb6cad35ba8fea5 SHA-256: 4c4d0da1d89b0b811fa0ff551a3f615c044470e03910012a8b964a839eae1070
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a visual download button further supports a social engineering lure. No scripts were extracted, but the primary attack vector appears to be a malicious link embedded within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=speak+english+podcast+com+pdf+004 In PDF document text
    • http://files.performingartsworkshops.org/uploads/1/3/1/3/131384777/zejapepuzufozodipa.pdfIn PDF document text
    • http://raforelo.motivationalcheck.com/uploads/1/3/2/7/132710621/ritovalegedagika.pdfIn PDF document text
    • http://files.meandmydogs.biz/uploads/1/3/0/7/130740066/rujuboduxanalex-puwelu.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/1/0431/6869/4432/files/gumunatoribobijavivakoniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/6474152764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5644/8156/files/66669400245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/53128990839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/xubes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/bangla_book_islamic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/98763911302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4022/6984/files/xafanenaravarifesesireba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9016/5403/files/sulitabuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/93021701016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/95801501846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/fodugipadisupupafif.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 6

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_off0000eef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF6 5868 bytes
SHA-256: 28de195f07c3a4216548766b1a197edfe3a382e59a33f9c1e9fdaf5fc23b9c5e
font_01_sfnt_off000102d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D1 10028 bytes
SHA-256: 5d40803cb5adf4a3d9e2184f35b34440da25af238f43032c9a2e2c00a79eeabb

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