Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8681490f9150beb…

MALICIOUS

PDF

56.3 KB Created: 2020-08-11 06:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14b2ce2fe81bf79ce138a118b6447edf SHA-1: 3baece4be34265132974a17dd6d2d4ea85073526 SHA-256: d8681490f9150beb0de54f31f88f80f655eb9b108a9e2443c221b569678a35ac
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics, suggesting a lure to a malicious site. The presence of a malicious redirector link indicates the document is designed to lead the user to a compromised or malicious resource.

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=list+of+important+days+and+themes+2020+pdf In PDF document text
    • http://files.ultimateagllc.com/uploads/1/3/2/7/132740249/2521911.pdfIn PDF document text
    • http://pajit.purefreedomwellness.com/uploads/1/3/1/3/131380600/domifejigijijasofom.pdfIn PDF document text
    • http://files.healthylifems.com/uploads/1/3/0/8/130813509/mijilowikejavetun.pdfIn PDF document text
    • http://bevapuna.ameliasclosetfilm.com/uploads/1/3/1/0/131070420/6947694.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/1/0430/7612/4821/files/zitili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/naratirekubad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/97200342621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/98337234006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/18649098527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5297/2697/files/38087070553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/zutafaluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2574/4540/files/article_370_35a_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8682/2053/files/57441563918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/window_8._1_pro_n.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9382/files/76213253129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4732/1751/files/4501482164.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_off00009caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CAF 5564 bytes
SHA-256: 39c564f5e9729a6e6b8a5f826f73fb36892b80a7531bc8c1212ab09a7fb390d9
font_01_sfnt_off0000af71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF71 10664 bytes
SHA-256: 3f2a37779c40d6eea0e9ba6cc165b16f52dd51499f3eadf553f2ed80aaaeda50

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