Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03519f8e3d892de…

MALICIOUS

PDF

43.7 KB Created: 2020-08-20 14:12:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8f3d15db322081a06c67848179da69c SHA-1: 4249a1520f9775688eac8d55f6bdca95a33412a2 SHA-256: d03519f8e3d892de139524d68c2a8ca05836c46bb03a74407796145c7a8ad1ca
202 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as an Illinois corporate annual report form. The document body, though heavily obfuscated, contains the target URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to improve search engine ranking for malicious content. The primary attack vector appears to be social engineering via a deceptive document lure.

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.ru/pify?keyword=illinois+corporate+annual+report+form+cdbcaf In PDF document text
    • http://files.elaineewertz.com/uploads/1/3/0/9/130969322/6d4e4f6869dff.pdfIn PDF document text
    • http://lexodabu.literaturehouse910.com/uploads/1/3/1/4/131408899/3414001.pdfIn PDF document text
    • http://files.moonwaterdojo.com/uploads/1/3/1/3/131384429/nukinox_kusotidute_wujasekex.pdfIn PDF document text
    • http://files.vjeronauka.net/uploads/1/3/2/3/132302710/de03b69ba.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/1/0427/8861/8396/files/80453318416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2017/1936/files/6th_grade_comprehension_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8029/4298/files/10443696340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/zawoxokave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/dexesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3335/4659/files/40585775733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/nimukiguwogivev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/73376035495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/faginawilexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0772/0854/files/board_size_guide.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_off00006b13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B13 5380 bytes
SHA-256: c37371a7e15a0fa5fee8d99ec8858885aa14ddf88b52dd23a851190d64d2de0b
font_01_sfnt_off00007d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D36 10948 bytes
SHA-256: 6cb8ec019c3411b97183bc813df140a66d26108444cf10c6e04c416c0d3f8fde

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