Malicious PDF — malware analysis report

Static analysis result for SHA-256 99d2c3b5e0408f4a…

MALICIOUS

PDF

41.4 KB Created: 2020-08-10 10:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b13198c749d237b10c368e77b6ec4d63 SHA-1: cb13c3af406f0c275ce7ab60e29f97ecf584df01 SHA-256: 99d2c3b5e0408f4a62d5346ec58420483f1388cc616d0ee5851d4b2f1d13f213
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, including a critical redirector link to 'ttraff.com', suggesting a phishing or scam attempt. The document body, though malformed, includes the text 'Audited balance sheet pdf', likely a lure to entice users to click the malicious links. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination and potentially improve SEO for malicious content.

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=audited+balance+sheet+pdf In PDF document text
    • http://files.kellymansfieldart.com/uploads/1/3/1/3/131382721/zolanele.pdfIn PDF document text
    • http://files.dawntilduskfarm.com/uploads/1/3/1/4/131437493/7462565.pdfIn PDF document text
    • http://kilufep.mrgarcia.org/uploads/1/3/0/8/130814328/8964810.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/1/0434/6504/8214/files/jokogojifijabusometabox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/79183481914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/96978973616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5308/7911/files/jobaviduwegowiper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3545/7696/files/school_counselor_monthly_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/39139443686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3444/6746/files/anticorpos_monoclonais_e_policlonais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/wuxon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0269/9681/files/24934714287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4583/1324/files/punimililoriwex.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_off000063ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EC 5276 bytes
SHA-256: 94c802ce8c157867b215d3c460391454409b6423c6d462afcb3c94a7d1b5a6e5
font_01_sfnt_off000075dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75DC 10424 bytes
SHA-256: 47ccc81ed388fc6d168a8208d0210a0e7bd2ebf784b89df9890770e4730f620e

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