Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0b5dabe6af0074…

MALICIOUS

PDF

49.9 KB Created: 2020-08-23 14:06:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d73a44e4feceb8fed8141fab8206245c SHA-1: 0c70ff683e1836226bf8ffdbbf6d0d855e40e278 SHA-256: ff0b5dabe6af00742329e998a99959e39457a53191d433291e9a8adc9b777902
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links to external resources, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure related to educational materials. The primary malicious URL identified is https://ttraff.cc/pify?keyword=hodder+education+maths+workbook+answers, which likely serves as a gateway to further malicious content. The presence of a large number of PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=hodder+education+maths+workbook+answers
    • http://files.jmhdesignandpainting.com/uploads/1/3/2/6/132681409/xarasivu_tuligesilop_zagarazesisej_wobatitesexogot.pdf
    • http://zebosepom.teamschusterindy.com/uploads/1/3/1/4/131437615/f699c13481ac4f.pdf
    • http://kedupi.nakedyogadallas.com/uploads/1/3/1/3/131397946/1712595.pdf
    • https://cdn.shopify.com/s/files/1/0430/8667/6117/files/46738389254.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jotinu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9487/5039/files/kitchen_hygiene_worksheets_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/duzorilogesebomeken.pdf
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/fabevab.pdf
    • http://dazetolap.parisicoffee.square.site/uploads/1/3/0/8/130874304/dinawipafapod.pdf
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/niselo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/aldrich_regular_font.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/real_estate_company_structure.pdf
    • https://cdn.shopify.com/s/files/1/0429/3335/4663/files/82366798526.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4657/files/87376562136.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/candidiase_de_repetio.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/wordly_wise_book_8_lesson_9_answers.pdf
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/45277454742.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ff2.bin
b9e052360c9c83b44d5a3cae7582928810449222ec1808c33de8cd9e2daebab9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF2 5404 bytes
font_01_sfnt_off0000922d.bin
3658855a7193f5648bb77bfa8e791fd424df2bca528b65abdf7909c22eb93e74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x922D 12688 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.