Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e41bb62b36cf91…

MALICIOUS

PDF

65.1 KB Created: 2020-07-12 21:35:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 69763e232b2647c9e4a28e8e19f6d72c SHA-1: d4ad6ab0016b23e7b08a94dd80b11a98423adc70 SHA-256: b9e41bb62b36cf9182bd03dec0ba3c8223fcc044369f40eaf176cfdf93d1901b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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=osex+not+working+skyrim+se In PDF document text
    • http://files.sisterlocks.com/uploads/1/3/2/6/132682290/4937b3109ee7.pdfIn PDF document text
    • http://files.hawgflatts.com/uploads/1/3/0/7/130775435/6053580.pdfIn PDF document text
    • http://files.317-447-4377.com/uploads/1/3/2/6/132682739/lezotemipivifujuguki.pdfIn PDF document text
    • http://files.broadwayboundmtc.com/uploads/1/3/0/7/130776682/7de24985df2f5bb.pdfIn PDF document text
    • http://files.svgreatschools.org/uploads/1/3/2/7/132741375/13388c10e7761.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://rufutekinose.files.wordpress.com/2020/07/98002824043.pdfIn PDF document text
    • https://nonugiwum.files.wordpress.com/2020/06/nafodosefemunulopusujavuz.pdfIn PDF document text
    • https://lonefib.files.wordpress.com/2020/07/68739646249.pdfIn PDF document text
    • https://retabenatuda.files.wordpress.com/2020/07/wemagopudu.pdfIn PDF document text
    • https://jegakalo.files.wordpress.com/2020/06/fepufopanelupimataf.pdfIn PDF document text
    • https://jusuxifigig.files.wordpress.com/2020/06/benonusobekejow.pdfIn PDF document text
    • https://turabiza121509985.files.wordpress.com/2020/06/47987620497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/wixorigapepajasoveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/73165036353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/tujasiserokejixomarok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nozawilod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/fazatunerivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xugifewelogukepebokiz.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_off0000c2dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2DD 4904 bytes
SHA-256: d9117bd3f71b6bd73bc43951b9d2a5cf305d52be89e16603a147629cdb74e97a
font_01_sfnt_off0000d38e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD38E 10384 bytes
SHA-256: 6b3a4d5868ad9f026bf3dc582c9dcc833887979570dd7e13e9030d80de2065c8

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