Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c61b97513696af…

MALICIOUS

PDF

44.4 KB Created: 2020-10-07 10:09:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7e0ab3f572c6fa896a8b313f7e664d9b SHA-1: 63943a1db0ef02b1f68e16c5041b0c04d968965f SHA-256: e5c61b97513696af5ef47e8edcabc3a6fe77be4f2c266a5c801ea03399f7860a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document also exhibits characteristics of a link farm, with numerous embedded links to other PDFs. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. The primary attack pattern involves luring the user to click the malicious link, likely leading to further compromise.

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=nosotros+los+pobres+pelicula In PDF document text
    • https://site-1048567.mozfiles.com/files/1048567/fiwegigojinaxav.pdfIn PDF document text
    • https://site-1036719.mozfiles.com/files/1036719/89733574803.pdfIn PDF document text
    • https://site-1037152.mozfiles.com/files/1037152/rasisume.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/45243984844.pdfIn PDF document text
    • https://site-1039215.mozfiles.com/files/1039215/24881035541.pdfIn PDF document text
    • http://nabibi.jacquelynharris.com/uploads/1/3/2/8/132814930/kuvajedukabuxitof.pdfIn PDF document text
    • http://files.onesimplereality.com/uploads/1/3/1/6/131636930/d5ec53296bd303.pdfIn PDF document text
    • https://site-1040437.mozfiles.com/files/1040437/tusesavalajup.pdfIn PDF document text
    • https://site-1038988.mozfiles.com/files/1038988/sufawekeboraze.pdfIn PDF document text
    • https://site-1038759.mozfiles.com/files/1038759/93034727075.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/1/0428/8200/7199/files/frases_de_autoestima_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0397/8143/files/zekavifetuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9234/3970/files/hawaii_medical_school_tuition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/33582714354.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8B 5036 bytes
SHA-256: bd6fbff375ab58798d096308a69945665cd2020850b47431f7aa06774141b788
font_01_sfnt_off00007db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB8 11556 bytes
SHA-256: 57b5c0b5829dfb55646ece56d6b393bf926cfb83784c51d702fb530965c071bd

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