Malicious PDF — malware analysis report

Static analysis result for SHA-256 a247163e32e2d2fb…

MALICIOUS

PDF

50.5 KB Created: 2020-08-24 08:18:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e1a83327873aa6fa5f28b787d320eb2 SHA-1: 3d734fb0b61ffdcd4aadb640a057374f836b3e65 SHA-256: a247163e32e2d2fbd50dfcd4b53ac65c3e8f502cee19e1ff5a92d02bca06d4e9
162 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a critical finding, suggesting the document is designed to lead users to harmful sites. The 'PDF_SEO_LINK_FARM' heuristic further supports this by noting a mass of external PDF links, likely for SEO manipulation or to obscure malicious destinations. The document body contains garbled text but includes the malicious redirector URL.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=bootstrap++file+button In PDF document text
    • http://files.beautyunderoneroof.com/uploads/1/3/2/6/132681969/2883554.pdfIn PDF document text
    • http://dalumaw.words-sketch.com/uploads/1/3/0/7/130776855/a1cfed8c354d.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/1/0431/4411/8428/files/supply_chain_risk_management_thesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7401/9740/files/altium_designer_pcb_layout_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/fovuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4937/6149/files/d_d_character_backstory_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/82726688848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7157/8024/files/91371864296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4245/5195/files/lost_ark_bard_pve_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9720/9498/files/jatebolifos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1188/2653/files/64591207711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5710/files/altaf_hussain_hali_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27621352833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8036/5720/files/2900741272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1374/1471/files/nadawuvubuwupijavinoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/traduction_anglais_francais_fichier_gratuit.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_off0000791e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x791E 5084 bytes
SHA-256: 6c6fe57b0061d65c6fe5425cfa736275eb0fb46c5d40b22419422c1f5a583553
font_01_sfnt_off00008a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A76 15884 bytes
SHA-256: d461491dc696fe217623fb427f07ee53c24aeb3e4598f9cbdd9fa6790eb0d2b4

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