Malicious PDF — malware analysis report

Static analysis result for SHA-256 717a3ed03226a1e8…

MALICIOUS

PDF

63.1 KB Created: 2020-08-28 07:13:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9bfd490da71bed6eb47bb53fb0a2092 SHA-1: 905133701a7d3ad9baf30c82182e1bf289247c6d SHA-256: 717a3ed03226a1e81ff599812f5b062616a148f9c2968898a960b36c0394b108
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to product names and URLs, suggesting a lure. The primary malicious URL is a redirector that likely leads to further malicious content or phishing pages.

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=bose+companion+3+series+ii In PDF document text
    • http://files.daniel12.com/uploads/1/3/2/6/132682585/21c62e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/54866585514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2793/6918/files/27767632552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9626/8193/files/xosojidugifizila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/xewogarifixuzusen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1450/3075/files/72384980904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7950/6847/files/cfa_level_2_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/xebutoraxuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2123/0233/files/my_cultural_identity_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5050/8181/files/29440816402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1050/5373/files/sagiramidanizexaxewepijog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/3606448632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/jurimuliwidajetekul.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005901.bin
f1df3162ce2db5ba99a76b7c2300298adf5c1f24ca9636a1b1f5f24f62eb5c15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5901 23604 bytes
font_01_sfnt_off0000a453.bin
6969d020b7580b1cee70c0b9b25a802ca28ea153cb6f7fbcd8a6c67886350069		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA453 5260 bytes
font_02_sfnt_off0000b618.bin
15c18c59465fecad653004ef38add086a0783054c1796eeb5b5001a816fb40c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB618 10216 bytes
font_03_sfnt_off0000d94c.bin
66c67c179765240748d105487bc7c62871f628c92c1ed4dc4b691feb0b622c4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD94C 16252 bytes

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