Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3eacb5e533f0ec7…

MALICIOUS

PDF

46.6 KB Created: 2020-08-22 15:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48559ca3740a0a370a233b3ee5af56da SHA-1: 8164157f99917711b101318d9ccab3e4bc8b732b SHA-256: f3eacb5e533f0ec7d9e64623a603a997dc86a8fe9a3d6223e454272eff81f347
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL that leads to this redirector, suggesting a phishing or malicious content delivery attempt. The presence of multiple external PDF links, some pointing to benign content and others to unknown domains, indicates a link farm strategy, likely to obscure the malicious destination. No scripts were extracted from this sample.

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=royal+canin+recovery+food+feeding+guide In PDF document text
    • http://files.littlesparrowstudio.com/uploads/1/3/0/7/130776047/tikudabulinewerero.pdfIn PDF document text
    • http://files.iwanttobeinsured.com/uploads/1/3/0/7/130738836/xosepexemififemafa.pdfIn PDF document text
    • http://files.herbheathmusic.com/uploads/1/3/1/4/131406412/desuregik.pdfIn PDF document text
    • http://files.sheeshworldwide.com/uploads/1/3/2/6/132682882/fugonugofude.pdfIn PDF document text
    • http://files.judygrillo.com/uploads/1/3/2/6/132681281/caa620b286dc.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/1/0435/0859/6900/files/convert_gallons_to_liters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4247/9007/files/make_file_size_smaller_in_acrobat_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/buffalo_bisons_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/regression_analysis_in_data_mining.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1695/1704/files/8775767887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/10351150470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8163/8812/files/belanapodip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/uptet_answer_key_paper_2_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/8416/3746/files/difference_between_criminal_law_and_civil_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/pesinu.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9B 5180 bytes
SHA-256: adc2f28cb6de961c10062319d88751932baf48e6554df2f5d2d572979d06f3fa
font_01_sfnt_off00006f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F58 11248 bytes
SHA-256: b4bf8a0e561dbdda77011981aa964eefd5b55b56852ea26b371fd5e35fcd0b4e
font_02_sfnt_off000095f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F5 16704 bytes
SHA-256: e1c65be4c5f8f0b34a2a83be491258260ab670a677ba0b245be37f1dd7ca4c27