Malicious PDF — malware analysis report

Static analysis result for SHA-256 554e8229a0db33be…

MALICIOUS

PDF

35.6 KB Created: 2020-08-12 20:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b51f16864c6afe55de11e334dc88a23 SHA-1: 47fa8524c8ec625ef6aeb4ee29551e512abb245b SHA-256: 554e8229a0db33be32a8d5bd99a19e12c094e353844816f0c0730eb1e761936a
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a document about 'Daun belimbing wuluh'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, and the ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the malicious URL and numerous other links, suggesting a link farm or redirection strategy to deliver a payload. The presence of embedded URLs and the overall structure point towards a phishing or malware delivery 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.cc/pify?keyword=daun+belimbing+wuluh+pdf In PDF document text
    • http://files.waquoithealingartscenter.com/uploads/1/3/0/7/130776499/nagozogojikubukato.pdfIn PDF document text
    • http://files.idancechicago.org/uploads/1/3/1/1/131163898/putimek-kuwatekaze-mirikusijimamug.pdfIn PDF document text
    • http://files.perthsoup.com/uploads/1/3/0/7/130775465/migaja.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/1/0435/8320/9631/files/47518704021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9200/9379/files/30647815510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/jifadanof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/fonapovokogopafaxekadub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7186/4993/files/eclipse_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/97649596177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1769/1559/files/25183790231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1658/3325/files/zikepulevovufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2441/4882/files/management_of_jaundice_in_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6424/5925/files/94134900182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1481/4882/files/73177236042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9309/6600/files/35132052717.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 2

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_off00004d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D60 5412 bytes
SHA-256: 6cede296964a69e59196b017a29ddc8f99493d2a82952b76d0d97aa8a69c9097
font_01_sfnt_off00005fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB1 9940 bytes
SHA-256: 922aad747ad0786c5d28aa19961a4b310da080c359263c536feaa11516aa8218

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