Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4cc30b2ce503ac…

MALICIOUS

PDF

45.1 KB Created: 2020-08-14 11:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e955da44cffef4f902f4abe1d71a3e4 SHA-1: 4c027f76d3cd071d490237f794e6655937a61d61 SHA-256: 1d4cc30b2ce503ac5b85aa86d1088247c92b41f8159bd575fbc2f4c12c6db4e0
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=moments+class+9+extra+questions+and+answers'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. The presence of numerous Shopify-hosted PDF links further indicates a link farm or SEO poisoning attempt to distribute 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.ru/pify?keyword=moments+class+9+extra+questions+and+answers In PDF document text
    • http://files.drtonicamacho.com/uploads/1/3/2/6/132681556/9044168.pdfIn PDF document text
    • http://files.theclinicnextdoor.com/uploads/1/3/1/3/131398419/4077ddca5.pdfIn PDF document text
    • http://files.ancientvoodoorituals.com/uploads/1/3/2/8/132814933/a1f29940819.pdfIn PDF document text
    • http://files.texascedarblinds.com/uploads/1/3/2/3/132303082/nusoxosaforegom_juxebabapatuni_mawirakivakixez_kaxixejowibar.pdfIn PDF document text
    • http://files.artwithmrswood.com/uploads/1/3/0/7/130775725/b8fc4.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/1/0437/1991/7720/files/12602698141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/37473547711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5098/2821/files/53014780287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/dukuligu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3011/7526/files/chemistry_periodic_table_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/host_file_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/49689920154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/38076931891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0225/5770/files/65014459732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/72073820803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0933/4696/files/81987698498.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_off000072b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B1 5532 bytes
SHA-256: 9450733d0f393005a4fdd83e6e145afb1645f33e1a49c7b7dd1d94e6f7c5908c
font_01_sfnt_off0000857c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857C 10036 bytes
SHA-256: 5a2e8aa3b610877aaf2cea79894083be5979fb8e9e0af14e6d9a93a00ad5527e

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