Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc9a29a3dc9527b9…

MALICIOUS

PDF

41.3 KB Created: 2020-08-24 20:55:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 549be9a7444452113e78062f52cc2227 SHA-1: 8dc7cf60e2103223b46173a326d4541c03555527 SHA-256: dc9a29a3dc9527b99c99aba27fc957f774cb61495758e3926e8431da927446c0
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious websites. The document body, though heavily obfuscated, contains references to financial terms and the redirector URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and clicks. The primary attack vector is likely social engineering via a deceptive link within the PDF.

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.com/pify?keyword=expenses+on+income+statement+or+balance+sheet In PDF document text
    • http://files.serenitycounseling-wellness.com/uploads/1/3/0/8/130874329/minebaluxuj-berixamis-weturiw.pdfIn PDF document text
    • http://files.loblowsports.com/uploads/1/3/2/6/132681885/31de8.pdfIn PDF document text
    • http://fover.sarahssensationalsweets.co.uk/uploads/1/3/0/7/130775350/2102572.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/1/0440/4084/7510/files/vernon_spelling_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/nawukibamukojuresivigum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0250/2054/files/c_read_json_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6758/6213/files/materi_akuntansi_keuangan_kelas_xi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7447/6440/files/11921336035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/zuxolorujudosonemolukol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/fotafigizo.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 4

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_off000062c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C7 5340 bytes
SHA-256: bc194e0bde7df7c0421ff30bbe4bfef6445f45c80d0e3e7aa407d37fcd567569
font_01_sfnt_off000074c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C2 10388 bytes
SHA-256: 23f72a6fabb4b1e18c7cca0201a328167431fc2676787a9be2a1e3323b288aa6

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