Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2061334ad2971fd…

MALICIOUS

PDF

56.0 KB Created: 2020-08-11 14:54:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed2f8da8ecd2e58acca8d804fdbffd6b SHA-1: 7bbca177232a6b00c47a55ecaf53ca79cc2bf1fd SHA-256: c2061334ad2971fd0df4d9089832764dbe29a98545aef0f96f714156b5556628
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.com', which is flagged as malicious. The document body, though heavily obfuscated, contains the text 'container houses plans pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF also contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm used 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.com/pify?keyword=container+houses+plans+pdf
    • http://files.noeleencosgrovemusic.com/uploads/1/3/1/8/131856279/6818246.pdf
    • http://tegekot.aaronbooth.info/uploads/1/3/1/4/131438474/josido.pdf
    • http://files.thephoenixcantata.org/uploads/1/3/1/6/131636855/4ae95f3f.pdf
    • http://files.maplephoenix.com/uploads/1/3/1/3/131380870/kawazato.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/minecraft_spawn_distance.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1449/files/62027964294.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1344/files/prova_auditor_fiscal_receita_federal_2020_comentada.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9588/files/aufklrung_zusammenfassung.pdf
    • https://cdn.shopify.com/s/files/1/0449/1457/3467/files/caged_bird_poem_maya_angelou.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/gupofarunapewojareras.pdf
    • https://cdn.shopify.com/s/files/1/0437/8296/3361/files/nulazupazibase.pdf
    • https://cdn.shopify.com/s/files/1/0436/5526/6454/files/47650732703.pdf
    • https://cdn.shopify.com/s/files/1/0434/7294/5304/files/avid_virtual_instruments.pdf
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/rupavorebel.pdf
    • https://cdn.shopify.com/s/files/1/0429/2945/5263/files/dilopifopegutulesamiwo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/windows_8._1pro_vl.pdf
    • https://cdn.shopify.com/s/files/1/0432/7001/3086/files/demitunutopedazax.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/
    • https://cdn.shopify.com/s/files/1/0438/5302/1344/files/prova_auditor_fiscal_receita_federal_2020_comenta

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e1b.bin
7f40d3b71b503c5407d08c4e71541d5ec358f4c9ca1f597894e04ca740af59c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1B 5032 bytes
font_01_sfnt_off00008f25.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F25 1800 bytes
font_02_sfnt_off000097b3.bin
a001a63c6955c10decada9e493f0099c6e160203fc586ccad1d5ecaaf2c95add		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97B3 10804 bytes
font_03_sfnt_off0000bc51.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC51 16312 bytes

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