Malicious PDF — malware analysis report

Static analysis result for SHA-256 529c4ae5bc360b48…

MALICIOUS

PDF

41.0 KB Created: 2020-08-23 00:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2cb21c8c418422ef0893c89c274e034 SHA-1: b9f1121a25664294b92b1592facc3285032b2443 SHA-256: 529c4ae5bc360b486234132fe37e63bb236146da7e18d93f2d5e487e54172027
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, but one critical link redirects to a known malicious infrastructure at 'ttraff.ru'. This suggests a lure to a malicious site, likely for further exploitation or phishing. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.ru/pify?keyword=elevation+worship+chords+pdf In PDF document text
    • http://zinara.nullacruising.com/uploads/1/3/0/7/130776647/45b25e298.pdfIn PDF document text
    • http://files.nicaraguaforchrist.com/uploads/1/3/0/8/130874246/jimusefufigupub.pdfIn PDF document text
    • http://xikafi.pietropolitano.com/uploads/1/3/0/7/130739059/5299836.pdfIn PDF document text
    • http://files.biggsbassethounds.com/uploads/1/3/1/4/131410545/4390993.pdfIn PDF document text
    • http://files.morningslight.com.au/uploads/1/3/1/6/131606290/mesedelomovem.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/1/0433/6081/3208/files/19385834359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/marusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9540/9311/files/getus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zexula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/12894188618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4015/2479/files/promissory_note_personal_loan_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/tapikomuxinoxurije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/jufofozer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/kugerukotafinegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/cerebro_reptiliano_humano.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 8

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_off00005720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5720 5352 bytes
SHA-256: 2404ef548896b216603d90d35e6051776610ea20f1555e977ac77291f827dd1d
font_01_sfnt_off00006967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6967 14272 bytes
SHA-256: b88ddd920c849ad98e99f585b037c1beeb18ea1b468ea17ebbd637513809d86b

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