Malicious PDF — malware analysis report

Static analysis result for SHA-256 1759d05b3a62a956…

MALICIOUS

PDF

45.1 KB Created: 2020-08-20 23:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee5b1b29e61e4f2ae9928f4e4e9698e4 SHA-1: 2bdbce1c5f6fd3d024c5352c5a04e717754c7052 SHA-256: 1759d05b3a62a956d2dfcfa4bf1c97984e2da6190b5576829de240acd57a97dc
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to appear as a free receipt template. The document body, though heavily obfuscated, contains references to this lure and numerous other PDF links, suggesting a link farm or phishing attempt. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead the user to a harmful destination.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.cc/pify?keyword=free+receipt+template+word+document In PDF document text
    • http://xirim.w-here2stay.org/uploads/1/3/2/6/132682347/4794229.pdfIn PDF document text
    • http://mebedega.dixiehighcounseling.org/uploads/1/3/0/7/130740073/4089089.pdfIn PDF document text
    • http://files.algimantascerniauskas.com/uploads/1/3/0/8/130813769/9c1815.pdfIn PDF document text
    • http://dedes.vinesnkerr.com/uploads/1/3/1/4/131406082/3722419.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/1/0432/2351/5300/files/arabic_words_meaning_in_urdu_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/fegeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/80777878552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/69779187519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/jirilowelariwifeparaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8239/0440/files/69424279371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9649/0663/files/werarunekinigazumutovutiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5654/4409/files/tirogoxexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0940/1254/files/jixamanada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0566/5703/files/seven_lions_start_again.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3217/5014/files/30158035517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/simebavu.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_off000072de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72DE 5088 bytes
SHA-256: 0e2d9b3d7b91ec227d42bba321b01145d65977297f5130a5ad6c5aca07656680
font_01_sfnt_off00008421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8421 10244 bytes
SHA-256: be4a47f91a2ce94c64818e17850adf35c5f8af14946be256787c6139b9cfdc59