Malicious PDF — malware analysis report

Static analysis result for SHA-256 38c46b7306b77183…

MALICIOUS

PDF

58.9 KB Created: 2020-08-11 08:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdce9e91c74d30920918641cb4099192 SHA-1: 6f856c40da8c59b5b26690c0b5549aeff6aa0a17 SHA-256: 38c46b7306b771838cb45f7236db999f12c5fae84f6306d1239140f8689c9ec1
152 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, with one prominent link identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL for the malicious redirector and references a screenplay PDF, suggesting a lure. The presence of a PDF link farm heuristic further supports the malicious intent of directing users to external, potentially harmful, content. No scripts were extracted from this sample.

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/pify?keyword=synecdoche+new+york+screenplay+pdf
    • http://files.dignitywomenscenter.com/uploads/1/3/1/4/131437246/ladobujasidawe.pdf
    • http://files.lmt-photo.com/uploads/1/3/1/8/131856666/f39232aa113.pdf
    • http://motixew.sidewaysconfections.com/uploads/1/3/2/6/132695531/fbb43.pdf
    • http://files.flipconsultants.com/uploads/1/3/0/8/130874610/gajogudaripatuj.pdf
    • http://rodinur.jadepublishing.org/uploads/1/3/0/7/130738629/8223200.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/givazipor.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5555796470.pdf
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/76198146975.pdf
    • https://cdn.shopify.com/s/files/1/0432/1473/3480/files/82707452986.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/18600018025.pdf
    • https://cdn.shopify.com/s/files/1/0432/8921/5129/files/bitcoin_mining_algorithm.pdf
    • https://cdn.shopify.com/s/files/1/0438/4561/5766/files/8264183826.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/associer_deux_documents.pdf
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/tenobemevojobo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4170/9462/files/kosed.pdf
    • https://cdn.shopify.com/s/files/1/0439/1573/9304/files/word_make_one_page_landscape.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/bringing_in_the_sheaves_sheet_music.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009872.bin
c250322d8309a790f422838813f6b7d078e3ba61620fd0a5476fb628f774459b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9872 5264 bytes
font_01_sfnt_off0000aa4f.bin
39a4278c9b15d28a0c7f46e37e99be8b849cad9008d85bb22692dcb7793a7d1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA4F 11040 bytes
font_02_sfnt_off0000d018.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD018 4324 bytes

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