Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a33b2818a5775d…

MALICIOUS

PDF

32.3 KB Created: 2020-08-09 09:04:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d73b7be859e4b446f1369b1c508866b5 SHA-1: 58b394e2f1193d7023c600e2de44788e611b7279 SHA-256: 47a33b2818a5775d6514102a2f5a3dec0fbae9ff4f43050ca657a13aa5ae33f6
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at `https://ttraff.com/pify?keyword=pdf+autobiography+of+apj+abdul+kalam`. Another heuristic indicates a link farm structure, suggesting a coordinated effort to distribute malicious content or phish users. 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.com/pify?keyword=pdf+autobiography+of+apj+abdul+kalam In PDF document text
    • http://files.tangledhairandbeautyoxford.com/uploads/1/3/1/3/131379740/vogulodif.pdfIn PDF document text
    • http://fodoki.peculiaritypress.com/uploads/1/3/2/3/132303382/1961698.pdfIn PDF document text
    • http://files.bouldervalley.org/uploads/1/3/1/0/131070178/fb3af050d6.pdfIn PDF document text
    • http://files.lisalmiller.com/uploads/1/3/1/4/131438759/xojega.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/1/0432/2040/2337/files/58878119322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/6145054428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/sovewujusakujuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3633/4490/files/68916702720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/taletuvuviziseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8960/6294/files/92337259212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8694/6212/files/jexosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2948/4952/files/zoology_ebook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/data_analytics_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4061/2262/files/7874925862.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_off000042b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42B8 5660 bytes
SHA-256: 0107508308955814e7769f18b8fb7705773346f171e142b19cd9f66a938a20db
font_01_sfnt_off000055e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55E1 8964 bytes
SHA-256: c8132c6fe18cf0ab958db84ab2a1b0f0eda8c8a759deb5aa9a1fc38803d714bb

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