Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bc3548cf83c4455…

MALICIOUS

PDF

51.1 KB Created: 2020-08-03 16:04:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c11f6089e3f46e6dbfa31b8552343c78 SHA-1: 766cf7eaa53c953b758dcb548323b4d8ada8bfdd SHA-256: 8bc3548cf83c4455c8b9913da0abf8e9af5e4182cae9123b5cbd6a04599f9597
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and several benign-looking URLs hosted on Shopify, likely to appear legitimate. The primary malicious URL, https://ttraff.com/pify?keyword=polymer+biomaterials+pdf, is the most critical IOC, suggesting a phishing or malware distribution 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.com/pify?keyword=polymer+biomaterials+pdf In PDF document text
    • http://files.paigebluejacket.com/uploads/1/3/0/7/130775275/letugekanerefan-pajawepukaki.pdfIn PDF document text
    • http://files.fernandoandradeart.com/uploads/1/3/2/6/132681728/nuwoxapeger.pdfIn PDF document text
    • http://files.thecubeexercisephysiology.com/uploads/1/3/1/3/131380596/ef7167ce.pdfIn PDF document text
    • http://files.riverstonerazorbacks.com/uploads/1/3/1/3/131380181/4215656.pdfIn PDF document text
    • http://files.hollytilley.com/uploads/1/3/0/7/130739344/4958658.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/1/0433/0127/3750/files/37351866814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25006313747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/35548188044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9308/2783/files/zaludixosexifil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2742/1608/files/21260343392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0896/6307/files/satizor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1056/4002/files/9318559889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/fogawufud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/lenonurixuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/suxesaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/wofakemizimiruzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9232/9119/files/wevejebolamezutoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4789/2630/files/kambi_katha_malayalam_cartoon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6048/5541/files/65521731515.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_off000080f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F5 5432 bytes
SHA-256: 0ab3a967b7fe743d87cef628cab42861e205bb4e060ed03977e682082374cc0f
font_01_sfnt_off00009351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9351 14400 bytes
SHA-256: 0ebf85b4d435be71d1ecfd507ec7bb491c337047ac7a507b74b3b1e541c4f8b0