Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a215cc5ca1f065…

MALICIOUS

PDF

39.8 KB Created: 2020-08-01 12:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1bcc0cc20827ad7cb56741a324bb8fda SHA-1: 65b30e771502a26ee5ec9b64a3c6a2ffc3490b2e SHA-256: a9a215cc5ca1f0654b9032753a2ae37cd541da445926227ffc1de01604a43420
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a power of attorney form. The document body and embedded URLs suggest a lure to download further malicious content. The ML classifier strongly supports the malicious verdict.

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=nys+power+of+attorney+form+2016+pdf In PDF document text
    • http://files.piratewalks.org/uploads/1/3/0/9/130969655/vosokivekiduf_dumimekipafa_jenedeze.pdfIn PDF document text
    • http://files.nejcrwc.com/uploads/1/3/2/6/132682471/gebexalabeso.pdfIn PDF document text
    • http://files.countertourism.net/uploads/1/3/2/6/132682974/mojuxasatelupor.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/1/0430/7936/8858/files/55674911242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7556/6749/files/43616231150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/77807793810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7249/5524/files/29489745756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0146/files/25719172835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/joragepijavopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/dunuxazegivelilexuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/robipegegujozibutawor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/jewagobigukezefuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0464/8859/files/87690918514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4133/9045/files/89654686419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5733/9813/files/troy_bilt_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/49130461843.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_off00005cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB7 5796 bytes
SHA-256: 7d264f6aac41741d794d493deb97c74678c539c30c9381e5de13b979f3405b65
font_01_sfnt_off0000707e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x707E 9972 bytes
SHA-256: 544c96ea7d439ce3062ef4ec25fea26c97d0af1c9b9a7097e8a701ae90e31608

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