Malicious PDF — malware analysis report

Static analysis result for SHA-256 302389b5596ab58b…

MALICIOUS

PDF

36.5 KB Created: 2020-08-30 19:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e034e583f90b5cd2f455b3c0c1452c7 SHA-1: 98c620ae583994b3b0036acca284caba1ea137af SHA-256: 302389b5596ab58b21c23f2c82bc66ff6fdfdf390abcfdde7be83c137d4a9163
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Turbo dismount no download' and the malicious URL. Additionally, a large number of external PDF links were found, many pointing to Shopify domains, suggesting a link farm or SEO poisoning attempt to increase visibility of the malicious redirector.

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.ru/wix?keyword=turbo+dismount+no+download
    • https://cdn.shopify.com/s/files/1/0436/6172/1765/files/waxos.pdf
    • https://cdn.shopify.com/s/files/1/0432/1827/2423/files/epson_wf_2630_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/2585409479.pdf
    • https://cdn.shopify.com/s/files/1/0435/4804/9572/files/wamorisodewubafuloni.pdf
    • https://cdn.shopify.com/s/files/1/0437/6192/6293/files/ielts_writing_task_1_vocabulary_for_pie_chart.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/pukitozuzajubaji.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/amman_songs_lyrics_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0449/4766/9160/files/hindu_girl_baby_name_list.pdf
    • https://static.usrfiles.com/ugd/e73fea_1364eabd4feb4efeb907795a581c2ea2.pdf
    • https://static.usrfiles.com/ugd/3f4b99_2061538d760f409fb8e2f3b81b170891.pdf
    • https://static.usrfiles.com/ugd/efb3f0_f4d2dcb70b4447458e361265690fdd29.pdf
    • https://static.usrfiles.com/ugd/b8c837_dac046756b5645e0902e25a83b11bb75.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/79535485703.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8541/files/bharat_gas_new_connection_delhi_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2566/9028/files/96048005304.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/smith_and_wesson_model_3000_20_gauge.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58580374151.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_off0000513e.bin
5006db69e27af2c306c6fab6335726d3eb8f12f91c4742abe4daccb9c09cdf04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x513E 5152 bytes
font_01_sfnt_off000062b2.bin
7f384b9b460441e77c5ed2604cc4b331aceaf53b0b35b1ed358b609ad7663269		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B2 10096 bytes

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