Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ceae616c2f22882…

MALICIOUS

PDF

53.5 KB Created: 2020-08-07 00:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8bb1a557d88f65da167a05d1898f81fb SHA-1: 1c520c68af85ec146a8fadfe71be89b28a23a945 SHA-256: 9ceae616c2f228827e3eed30c274619b51b5b433a933d5265248a4baf4d7bdb8
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=addition+and+subtraction+worksheets+for+grade+3+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on domains like 'cdn.shopify.com' and others that appear to be part of a link distribution network. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting it's the primary lure.

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=addition+and+subtraction+worksheets+for+grade+3+pdf In PDF document text
    • http://files.room4love.org/uploads/1/3/0/8/130874458/koban_subozad_lalak_wifufup.pdfIn PDF document text
    • http://files.thegiftoflifeproject.com/uploads/1/3/0/7/130776725/1295818.pdfIn PDF document text
    • http://dazib.handsofluv.com/uploads/1/3/1/3/131398428/440388.pdfIn PDF document text
    • http://files.drawmakesnap.com/uploads/1/3/1/3/131384300/ca192.pdfIn PDF document text
    • http://files.heritagephilharmonic.org/uploads/1/3/1/4/131406379/8177707.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/1/0435/4162/7029/files/introduction_to_diagnostic_microbiology_delost_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3789128943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5282/6777/files/nejoridige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/katajitewoduzawipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/44322876888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/79795211630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4125/9671/files/jalomurefuxibakavevozenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/42983321392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/69811053540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/wizixixifumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1312/7835/files/2893483172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2936/3878/files/antibiotics_chemistry_project.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_off000089b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B5 5832 bytes
SHA-256: 5f47aab3d15b9234d2bae7edbea96a375ae71f5c0d5aabf6a3dcac0930a56f16
font_01_sfnt_off00009da6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA6 13468 bytes
SHA-256: 1966a85f2c4a38dfd9b5ca336172e6034523bbe49c8ba88c00afddfde8009a12

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