Malicious PDF — malware analysis report

Static analysis result for SHA-256 9004059908a8c4c3…

MALICIOUS

PDF

60.6 KB Created: 2020-08-22 00:46:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b410a7addbde75ccbbb6d8894d6177ba SHA-1: f51461189a13472656baa3ff03e8585e810763ca SHA-256: 9004059908a8c4c3f20340244778b1ebe3c3a6cf731ccdbcdf334f7be1369e02
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'adding unlike fractions' and the URL 'https://ttraff.ru/pify?keyword=adding+unlike+fractions+common+core+worksheets', suggesting a lure to a malicious site. The ML classifier also flagged this PDF with high confidence.

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=adding+unlike+fractions+common+core+worksheets In PDF document text
    • http://files.tinytownllc.com/uploads/1/3/1/4/131437471/9208199.pdfIn PDF document text
    • http://files.copewithcancer.net/uploads/1/3/1/3/131384071/dowubazowid_lorovul_tefopatekunurov.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/1/0434/7074/9856/files/52636013623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6900/4190/files/meri_bhavna_jain_bhajan_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2204/0731/files/off_balance_sheet_liabilities_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7168/4252/files/54547863905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/pejujodidewopiduwajebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1938/6526/files/84959170188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/pasabulubaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4757/4949/files/top_100_songs_torrents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/chrome_tabs_query.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8476/3556/files/parliamentary_and_presidential_form_of_government.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2478/4292/files/16188477788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/afk_arena_team_building_guide.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A15 5580 bytes
SHA-256: 685a39be3f5f0fda903982272766a4305543c1e9dc8f51c3ca5a27dd37772a8c
font_01_sfnt_off0000acf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACF0 10100 bytes
SHA-256: fe520d61b739392d85b93fe9d9f5311e3d8d46c277da18dcde93b6873e0de3df
font_02_sfnt_off0000cfb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB6 16116 bytes
SHA-256: 64e13322576ebe4b9a20b8efdba1cb2c8bc01163a7c4e1ba1f667a2d7cf8e6df

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