Malicious PDF — malware analysis report

Static analysis result for SHA-256 0063252c30bbbfca…

MALICIOUS

PDF

56.7 KB Created: 2020-08-13 11:29:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 010a470726eed699176e393b801a5008 SHA-1: 4039845fc55bd9e7a9ffde7e034306b527e205e9 SHA-256: 0063252c30bbbfca7d995a9c93f74a4d4544d9622ba8b011d3d5f1a42266ed17
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains the same URL and keywords related to environmental justice, suggesting a lure. The presence of a large number of external PDF links also indicates a link farm strategy, likely for SEO poisoning or to obscure the final malicious destination.

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/wb?keyword=environmental%20justice%20pdf
    • http://files.programsformindfulliving.org/uploads/1/3/1/0/131069961/wupoxifu.pdf
    • http://bolukitu.kamenrider.ca/uploads/1/3/1/4/131437657/gedabab.pdf
    • http://files.myvegestar.com/uploads/1/3/2/8/132815854/6eebd8ee4.pdf
    • http://files.crosswindscrossfit.com/uploads/1/3/1/4/131453541/1863020.pdf
    • http://pizez.saintjosephsuites.com/uploads/1/3/1/6/131606490/bevos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/wepuvegemetarebotav.pdf
    • https://cdn.shopify.com/s/files/1/0441/2299/6888/files/51236434624.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6202/files/99725861198.pdf
    • https://cdn.shopify.com/s/files/1/0428/6418/1404/files/49984441618.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/44275421363.pdf
    • https://cdn.shopify.com/s/files/1/0436/9183/5545/files/java_download_oracle.pdf
    • https://cdn.shopify.com/s/files/1/0433/7994/9733/files/gaguzewijedukad.pdf
    • https://cdn.shopify.com/s/files/1/0455/6845/8917/files/college_board_sat_practice_test_6.pdf
    • https://cdn.shopify.com/s/files/1/0429/3296/1443/files/61253490036.pdf
    • https://cdn.shopify.com/s/files/1/0430/4073/5381/files/lexevujobutijuxivo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/8548524011.pdf
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/77910419473.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/4531185977.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000938d.bin
213aef9bcffdc1d21bdf8acaeefbb89dfa8240986580a02ec8258953086f642d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x938D 5276 bytes
font_01_sfnt_off0000a563.bin
852032d649452f0a7800c5fbc8e2cf6af6f06a03771703020729bc16670ac800		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA563 9996 bytes
font_02_sfnt_off0000c77c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC77C 4324 bytes

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